MUCH has been said and written, during this present era of big warships of the so-called dreadnought type, about the astounding but nevertheless continual increase in the size and power of armored ships; but it takes such a concrete presentment as is shown in our artists comparison on another page of this issue of the old Oregon of the United States Navy and the new Lion of the British navy to bring home to our minds the amazing development which has occurred during the past twenty years. Turn back to the newspaper files of the early nineties, in which the naval specialist of the daily press was struggling to express his sense of the almightiness of the Oregon and you will realize that there was a common belief that the limit of fighting power had been pretty well reached. And there was much ground for the prevailing enthusiasm; for in 1890, the date of the signing of the contract for the Oregon there was no ship afloat that compared with her in the weight of metal which could be discharged in a single broadside. So great has been the advance in the intervening years that the Lion with her speed of from 28 to SO knots and her battery of eight 13.5-inch guns, could meet the Oregon and her sisters, the Indiana and Massachusetts and sink them without running the risk even of serious disablement. with her superior speed, she could maintain a position so far distant, that the 13-inch shells of the older ships would reach her with a diminished striking energy that would be quite insufficient for penetration of her Simpson armor; whereas at that same range the obsolete armor of the Oregon and her consorts would be penetrable by the new 13.5-inch gun. Comparing the old and the new in detail, we find that the length has gone up from 348 feet to 700 feet, the beam from 69.S to 86.5 feet, and the displacement from 10,288 to 25,250 tons. The Oregon was propelled by reciprocating engines of 11,037 horse-power at a speed of 16.79 knots; whereas the turbines of the Lion will probably develop from 75,000 to 77,000 horse-power, driving the great ship at a speed of between 29 and SO knots. The Oregon stowed 1,450 tons of coal in her bunkers; the Lion will accommodate 3,500 tons of coal and 1,000 tons of oil fuel. Although the armor on the sides of the Lion will be only about half as thick as that on the Oregon its resisting power, because of the harder and deeper face, will be greater. This comparison is made without any thought of disparaging the qualities of the older ship. Indeed, it is worthy of note that the Oregon foreshadowed the original dreadnought and all the great ships which have followed her general plan. The European battleship of the early nineties carried four big guns as the main armament, and then dropped into the feeble five and six-inch guns as a Inecohdary armament; The 8-inch, armor-piercing guiis of the Oregon were a distinct innovation; and it is certainly but just to the naval designers of the United States navy of that day to credit them with having suggested the advisability of an all-big-gun armament as the best suited to the line of battle. The editor, indeed can remember more than one personal discussion of the subject with ofcers of our navv who protested against the elimination of the 8-inch gun from the “Maine” class of battleships, and urged that the substitution should have been rather of lO-inch guns than of 6-inch for the eights which were carried on the “Oregon." ” The World Patent" I N speaking before the annual meeting of the Society of German Chemists last June, Dr. E. Kloeppel chose for his subject the “World Patent,” and discussed the question of what could be done in Germany at the present time toward the ultimate realization of a universal patent of international validity. While it would be quite unreasonable to be at all optimistic with regard to the early realization in full of such an idea, the speaker pointed out that this is no reason why such steps as are within reach should not be taken to proceed at least some small distance in the direction toward the ultimate goal. Much of what Dr. Kloeppel said is of great interest to the inventor and patent lawyer, and some of the salient points of his address are outlined below. Dr. Kloeppel frst of all pointed out that when we speak of a world patent we tacitly limit our ideas to the countries of the International Union, which of course enter frst into consideration. In this connection it is interesting to note a communication published by Damme, that the French government made a proposal at the diplomatic conference of the States of the International Union recently assembled at Washington, according to which all patent applications in the countries of the Union are to be registered at the Bureau in Berne. This plan would be easily carried into efect (as has already been done with regard to trade-marks), if all the countries of the Union followed the French system of patent application without preliminary examination. In view of this it is not surprising that the frst detailed publication on the “'orld Patent” should core from the pen of an energetic opponent of a preliminary examination. Du Bois Reymond opens his book with the declaration that he would look upon a fnal victory of the preliminary examination process as a “victory of the irrational over the rational.” Dr. Kloeppel himself does not follow Du Bois Reymond in this matter, though admitting that the latter's publication contains much which will help to create a receptive spirit toward the idea of the “World Patent,” even though its full realization may be a very long way of. Starting from this basis we may briefy examine what possibility there may be of simplifying the proceS3 of examination in connection with patent applications by the aid of international agreement. The chief problem here is to determine how far the actual work of examining, which under the present system is repeated in each country in which an application is fled, could be performed once for all by one country, and the results made available for use in dealing with the applications in other countries. At the present time England, Austria, Portugal, the three Scandinavian States, Japan, Germany, and the United States have a preliminary examination. As a matter of fact, the objective treatment of the problem of examining difers much less even now in the several countries than is commonly supposed. It is not by any means true that the more important States have the most rigorous examination. Thus, the Scandinavian States have a very strict and thorough examination. Du Bois Reymond proposed that the unnecessary duplication of the examining labor be reduced by the establishment of closer treaties between the individual countries. For instance, the frst step might be taken by Germany making an agreement with Austria that all German patents should without further parley be valid in Austria, and vice versa. There are, however, considerable difficulties in the way of such a plan, and in fact arrangements of this kind have existed in the past but have been subsequently abolished. The kind of trouble that would be likely to arise can be foreseen if we consider for example the fact that a given patent would be construed by German courts, while it could be set aside only by Austrian authorities. Another plan which tends in a somewhat similar direction, but could probably be more readily carricd out, is suggested by the following considerations: At a time when Austria had not joined the Paris Convention, and the German-Austrian Treaty of 1891 was still in force, a joint applicant would, as a rule, wait until his German patent was completely examined and issued, and would then apply for a patent in Austria, receiving by the terms of the treaty the benefit of priority in accordance with the date of his German application. So far as can be ascertained, it hardly ever occurred that the Austrian Patent Ofce-which has a very rigorous examination-refused to grant such patents or even cited new matter against them. It may therefore be said that practically the Austrian Patent Ofce granted patents on the basis of the German preliminary examination. As a matter of fact, under present conditions, since Austria has joined the Paris Convention, and the German-Austrian Treaty of 1891 has been rescinded accordingly, considerable changes have taken place, ard a German applicant is in general forced to fle his Austrian application before his German patent is issued, in order to obtain the beneft of the twelve months allowed for priority rights by the Paris Convention. There appears to be no cogent reason why the admission of Austria to the Convention should set aside the previously existing treaty. This latter might therefore be renewed and a clause might be added which would obviate the duplication of the examining work. There would be no occasion for any solicitude that, for instance, the Austrian examination should be less stringent than that in Germany, for in practice this is found not to be the case; indeed, instances are known in which rather the reverse is true. Moreover, any possible error which might arise would be automatically corrected in the subsequent “Ein-spruchsverfahren” which forms part of the regular procedure both in Germany and Austria in the course of obtaining a patent. If a treaty of this kind were made frst of all between two countries such as Germany and Austria, which are closely rclated politically and in point of patcnt law, no doubt the dcsire would soon be felt among other nations to enter into similar agreements. Possibly when the advantages of such a plan become fully realized, other nations, whose patent laws difer more widely from those of Germany, might be persuaded to take similar steps. The suggestions made by Dr. Kloeppel are of course framed entirely from the German point of view, and allowance must be made for this in considering them. Possibly, too, they may appear somewhat optimistic. Nevertheless, there can be no doubt that the general principle of such an aim at unifcation is thoroughly sound and presents an ideal which it is desirable for all nations concerned to set before themselves. The Term “ Anticyclone" O UR English cousins are never truly happy unless they have some subject-the more academic and unpractical the better-to wrangle about in the daily press. We learn from Symons's Meteorological Magazine that a vehement controversy has been raging in The Times over the appropriateness or otherwise of the word “anticyclone,” which was evolved from the fertile brain of Galton nearly half a century ago, and has since been almost universally applied by meteorologists to a system of winds blowing about a center of high barometric pressure-a “high,” as it is called colloquially; the reverse of a “cyclone,” or “low." One correspondent, Mr. Pearsall Smith, suggested that an anticyclone should be called a halcyon, with reference to the fabled condition of the weather about the time of the winter solstice, when the halcyon was supposed to be brooding on its foating nest. Other writers, whose ideas as to the characteristics of an atmospheric high-pressure area were more or less hazy, suggested such alternatives as “calm,” “air-calm,” “wind-wyr,” and “plenum.” The first two of these are interesting as indicating that the English public is quite as much at sea as the American public concerning the proper meaning and application of the word “cyclone.” The whole controversy was extremely puerile-and the word “anticyclone” is in no danger of vanishing from the meteorological vocabulary-but it is interesting as an illustration of the discussions of scientific questions by unscientific people that are rather common in English newspapers. \ e may suggest that these writers might use their ingenuity to better purpose in trying to devise some acceptable substitute for the word “cyclone” in its application to a cyclonic storm. In doing so they would be following the example of certain German meteorologists who, in the last few years, have endeavored to establish a distinction between thc words “Zyklon” and “Zyllone,” the former meaning a violent whir ling storm, and the latter a cyclonic system of winds in general. Aeronautics A New World's Record Flight With a Passenger. -Besides the new height record made by Beachy at the Chicago meet, Wm. Beatty set a new mark for endurance with a passenger by remaining aloft with Fred Wagner, a photographer of the Chicago Tribuue no less than 3 hours, 42 minutes, 22 1/5 seconds. The new record beats by 23 minutes that made by Amerigo with an Aviatik aeroplane in Germany some time ago. Beatty accomplished the feat with a Wright biplane. Aerial Postal Service in England.-The English POEtmaster-General has arranged for the inauguration of the “First United Kingdom Aerial Post” in London on September 9th. The aerial mail will be collected from special letter boxes located in several department stores. It will be taken by automobile to the Hendon aerodrome, whence an aeroplane will carry it to Windsor Castle in less than half an hour. From the post office at Windsor Park the letters will be sent in the regular way to all parts of the world. Flying in a Wind. -Perfect mastery of their machines in half a gale by the Cur. tiss aviators, Beachy, Ely and Ward, and the ability to fly and climb to great heights when even the 'right machines were unable on account of the wind, was the surprise of the Chicago and Boston meets. At the former Beachy and Ward flew high and long-the former attaining and altitude of 7,917 feet and flying till his fuel was exhausted-when five Wright machines remained on terra firma, while at Boston Beachy and Ely made fine flights after the 33-mile race to the lighthouse and back had been postponed on account of the wind. Aviation in the Sahara.-The French government' is pushing forward its plans for providing communication by aeroplanes in the Sahara, especially for military purposes. In accordance with the recommendation of the military committee of the Ligue National Aeri-enne, and of General Bailloud, commanding the 19th army corps, a post for aeronautical studies wiII be established :n the autumn of 1911 at Biskra, 140 miles from the coast. Particulars of this enterprise have been published in La NaJ(ure, from which it appears that fve aeroplanes wiII be provided, four of them to be of metal, in anticipation of tILe fact that wooden apparatus would be seriously warped by the hat climate. The staff will consist of three aviators, under the command of Lieut. de Lafargue, and thirty other men (mechanicians, etc.). A New Record for the MIchel , n Cup.- C omp etit io n rema ins b r i sk for the M ic h e -Im' T rop hy, wh;' c h 1' S t 0 b \ aw ard e d t his y ea r for ih e lo nge s t cantinu ou s f I' ght over a 62-mile circuit ' Stops are perm isSIble to take on fuel, etc., the thlllg that counts being the disltance covered from the start to the finish of the attempt. On the 9th of last month Vedrines set out to f y 1 , 000 kl'l omet ers. St al tI· lg a t 4'. 03 A . M ., h e flew unt 1'l 3 P . M . on h'IS M orane monoplane, covering 811.2 kilometers (503% miles), of which 800 kilometefs (496. 8 mI'1 es ) count as th e recor d . Th e time, including two 50-minute stops, was 10: 56: 42, and the average speed 57% miles an hour. On the 26th ult. M. HelIes, in a 15-hour flight, covered 1,200 kilometers (745.6 miles) on a Nieuport monoplane that averaged 50 miles an hour ineluding stops. Recent Altitude Records.-Beginning with the record height of 3,300 meters (10,826 feet) scored by Capt. Felix a month ago, a number of altitude records have been made with and without a passenger. Capt. Felix, who flies a BIeriot, made his record when practising for a flighit across the Alps. On the 4th ult, in France, Lieut. BIard started from Mourme]on with a passenger and attained a height of 2,000 meters (6,560 feet) over Sissonnes. The same day, in England, Oliver de Montalent reached 2,500 meters (8,200 feet) with a passenger. On the last day of the. Chicago meet Lincoln Beachy broke the world's altitude record by climbing to a height of 3,548 meters (11,640 feet) in one hour and 48 mi mutes. He atta .ned thIS great heIght :l-a Curtiss “headless” biplane, and thrilled the spectators by a daring. descent in spirals after his gasoline was exhausted. Beachy's actual height above s'ea' level was 12,296 feet. Science Prof. Tarr's Adventures in Alaska.- According to press dispatches, Prof. Ralph E. Tarr, of Cornell University, who has been studying Alaskan glaciers, lost all of his data and instruments when a skiff, in which he and his party were crossing the delta at Fairbanks, capsized. The German Antarctic Expedition.- The “Deutschland,” the ship of the German Antarctic Expedition, which sailed from Germany in May, is expected to reach Buenos Aires in September. A leisurely voyage has been made over parts of the Atlantic that have hitherto been little explored in a scientific way, and oceanographic and physical observations have been carried on. Lieut. Filch-ner, the commander of the expedition, will join the ship at Buenos Aires, together with the last part of the equipment, including the ponies and dogs. An International Museum of Speleology is to be founded at Adelsburg, Austria, near which lies the Adelsburg Grotto,. the largest known cavern of Europe, the passages of which are fve and one-half miles long. In this museum will be collected objects of all kinds relating to the study of subterranean botany, zoology, paleontology, anthropology, as well as geophysics, underground waters, etc. The site, which is in the famous Karst country, is well chosen for the pnrpose. The Austrian Ministry of Agriculture has contributed $6;000 to the undertaking. A New Aerotechnic Institution. -Notwithstanding the fact that the word “aerotechnic” is not yet known to the dictionaries, institutions devoted to aerotechnic investigations are springing up in all parts of the world. The latest addi-| tion to the list is the Aerotechnic Insti-ute, near Versailles, founded by M. Deutsch de la Meurthe, which, we learn from Nature, was formally opened on July 6. It has 'been endowed by its founder with a capital of $100,000 and a yearly income of $3,000, and is equipped with all apparatus r ecessary for experiments in aeronautics and aviation. Why American Prairies are Treeless.- Prof. B. Shimek, of the State University ?f Iowa, has been studying this question I Iowa, where the treeless prairie originally covered more than seven-eights of the total area of the State. He fnds that the absence of trees is not due primarily to the soil or the topography, nor to such causes as prairie fires, the former abundance of the bison, etc., but is an effect of climate. Moreover, it is n 0 t d ue t 0 a d e fiCl' ent ram. f a II, so much as to an excessive rate of evaporation. “The prairie areas are uniformly so situate d th a t th ey are f u IIy exposed t 0 th e factors which cause rapid evaporation ' nameI y, th e sun and th e w .nd . D ur .ng much of the year they may present condltl.Ons qUIte favorable to plant growth, but there are seasons and there are portI' ons a f th e year, especl. aIIy m' ml. dsummer ' when evapo ratI' On an d consequen t deSSIcatIOn become so extreme that only those plants whIch are especIally ada p ted t 0 dry regl'Ons can surVI. ve." Petrified Forest Grants.-Three petr. fed redwood trees, that have been pronounced the very largest in the worldthat have thus far been dlscover;d-have Just been uncovered from the debns of the mountain-side-only a short distance from the famous Bohemian Club Grove, in Sonoma County, Cal. This point is near the little town of Occident. One of these prehistoric monsters-that make the pyramids of Egypt modern, by comparison, in their ages, measures 23 feet in diameter and is 350 feet in length! The other two petrified trees are 13 and 12 feet in diameter, respectively. 'The very largest petrified trees yet discovered, near Calistoga, Sonoma County, Cal., is only 12 feet in diameter. These three trees lie on a wooded hill pointing due north and south. The petrifaction is most remarkable-the grain of the wood, and in one of them the decaying heat, being very plainly discernible. Surrounding these petrified trees is standing a forest of very large redwoods. However, all of the standing trees are dead. The owner of the land on which these three great petrifactions lie, is now having the debris all cleared away, so as to fully expose the giant trunks, ' and an iron-railing will protect them. "STAR “ Foot an d Power ijl/lIV Scre w Cutting Autom a tic I 1 TIIEC Cms F .. . LATHES r or Fine, Accurate Work Send Eor Catalogue B SENECA FALLS MFG. CO. 695 Water Street Seneca Falls, N. Y .. U. S. A. THE SEBASTIAN IS-INCH ENGINE LATHE HIGH G RADE LOW P RICE Automobile Builders: Garages, Repair and Genera J Jobbing Shops find thlS the ,deal lathe for their work. Catalog free. Tlte Sebas . an Lallte Co. 120 Culverl St .. Cincinnati, Olio WORK SHOPS of Wood and Metal Warkers, without steam power, equipped with BARNES' Foot Power MACHINERY allow lower bids on jobs and give greater profit on the work. Machines sent on trial if desired. Catalog /ree. W. F.&JNO. BARNES CO. 1999 Ruby Street E “. bli , h ,d 1872. Rokford, Ill'n. 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It will be provided with Pupin coils, and the construction will be similar to the cable now connecting France with England. Wireless on Turkish Warships. -A wireless telegraph station is soon to be built at Constantinople. This will have a capacity of twenty kilowatts, and a radius of six hundred miles. In connection with this station, eleven Turkish warships will be equipped with apparatus covering a radius of four hundred miles, and seven others will be equipped with less powerful apparatus. A Monorail Elevated Road for Mexico City. - A corporation is seeking permis sion to build an elevated railway in the Federal District, Mexico, on the plan of the one in Berlin, where the cars hang from a single rail. It is proposed to build a loop or circle within the city proper, by which passengers will be carried to within three blocks of almost any part of the capital, and from this loop branches will extend to the suburbs. The branch lines will run at ground level after leaving the city. Wireless Telegraphy in Morocco.-A wireless telegraph station recently installed at Fez has greatly facilitated communication between the French government and its troops in Morocco. Messages are sent from the Eiffel Tower in Paris to Oran, Algeria, and there relayed to Fez. Another wireless telegraph station has been established by the French at Taourirt. This furnishes an alternate means of communication between Paris and Fez, viz., by submarine cable to Oran, by overland telegraph to Taourirt, and by wireless to Fez. Electric Baling Presses. -It has been an almost universal practice to operate baling presses ,by hydraulic power. This has entailed considerable expense in localities where water pressure could not readily be obtained. It was recently suggested that electricity could be used to advantage for this purpose. Presses of this sort are now in operation. The table which carries the bale is suspended by means of four steel cables from the press head. The cables pass over several sheaves, to the winding drum which is connected to a reversible motor. By this means the table is pulled up toward the press head, compressing the bale. An automatic brake is provided for holding the bale under pressure. Wireless in Military Aviation.-On .uly 29th the new wireless outfit of the French military aviators was used with entire success in an aeroplane manned by Adjutant Menard, as pilot, and Capt. Brenot, according to a note in Cosmos. The aviators started from St. Cyr and few over the region of Rambouillet. Keeping at an altitude of 1,600 feet, they had no difficulty in sending wireless messages to the Eiffel Tower, at an average distance of thirty miles, whence the messages were immediately transmitted to the Ministry of War. The apparatus used weighs, in all, 46 pounds. The spark is produced by a magneto operated by the motor of the aeroplane. The antenna, made of steel wire, can be rolled up when not in use. Experiments are now being made with a view to increasing the range of transmission. Wireless “ Lighthouses. “-La Nature announces that the :'rench Ministry of Public \orks has decided to establish three “phares hertziens.” The translation of this expression into English in.. volves a contradiction; a “phare” is a lighthouse, but the new installations are to utilize Hertzian waves in lieu of light, and are designed to take the place of ordinary lighthouses in time of fog. One will be established at the lighthouse of Creach, Ushant; one on the island of Sein; and the third on the lightship “1,e Havre,” seven miles from the cape of La Heve. Each of these three “lighthouses” will send a characteristic signal. By the use of the Bellini-Tosi radio-compass vessels will be able to determine the direction from which the signal comes, and thus get their bearings in thick weather. No-Rim-Cut Tires For 800 Cars Per Dayj When our factory additions now under way are completed we shall have capacity for 3,300 Goodyear tires per day. More than enough to completely equip 800 cars each day. This year, with six times the output of 1909, the demand has run ahead of supply. All because motor car owners are proving that these patented tires do cut tire bills in two. These tires can't be rim-cut. And GOODJ^EAR No-Rim-Cut Tires With or Without Non.Skid Treads they are 10 per cent oversize. This oversize alone, with the average car, adds 25 per cent to the tire mileage. They cost no more than standard old-type tires, so the saving is clear. They fit any standard rim. These tires, naturally, are being adopted as fast as men find them out. Our Tire Book-based on 12 years of tire making - explains all the advantages. Ask us to mail it to you. THE GOODYEAR TIRE&RUBBER COMPANY, First Street, AKRON, OHIO Branches and Alencies in 103 Principal Cities (368) We Make All Sorts of Rubber Tires Canadian Factory: Bowmanville, Ontario Main Canadian Office: Toronto, Ontario Valuable Books Industrial Alcohol Its Manufacture and Uses By JOHN K. BRACHVOGEL. M.E. Octavo, 528 pages. 107 illustrations. Price. $4.00. ( This is a practical treatise, based on Dr. Max Maercke''s Introduction to Disstillation “ as revised by Drs. Delbruck and L ange. It com prises raw m aterials, m alting. mashing nnd yeast preparation, fermentation. distillation, rectification and purification of alcohol. alcoholometry, the vafue and significance of a tax-free alcohol, methods of denaturing, its utilization for light, heat and power production, a statistical review and the United States law. This is one of the most authoritative books issued on the subject and is based upon the researches and writings of the most eminent of Germany's specialists in the sciences of fermentation and distillation. It covers the manufac ture of alcohol from the raw material to the final rectfed and purified product, including chapters on denaturing, domestic and commercial utilization. Handy Man's Workshop and Laboratory Compiled and edited by A. RUSSELL BOND. 12mo•• 467 pate. 370 illustrations. Price, $2.00. ( This is a compilation of hundreds of valuable Suggestions and ingenious ideas for the mechanic and those mechanically inclined, and tells how all kinds of jobs can be done with home-made tools and appliances. The suggestions are practical. and the solutions to which they refer are of frequent occurrence. It may be regarded as the best collection of ideas of resourceful men published. and appeals to all those who find use for tools either in the home or workshop. The book is fully illustrated. in many cases with working drawings, which show clearly how the work is done. Concrete Pottery and Garden Furniture By RALPH C. DAVISON. illustrations. Price, $1.50. I6mo., 196 pae, 140 eJ This book describes in detail in a most praetical manner the various method. of casting concrete for ornamental and useful purposes. It tells how to make all kinds of concrete vases, ornamental flower pot. concrete pedestals, concrete benches. concrete fences, etc. Full practical instructions are given for constructing and finishing the different kinds of molds. making the wire forms or frames, selecting and mixing the ingredients, covering the wire frames, modeling the cement mortar into form, and casting and finishing the various objects. With the informaton given in this book, any handy man or novice can make many useful and ornamental objects in cement for the adorn ment of the home or garden. The information on color “ork alone is worth many times the cost of the book. The Design and Construction of Induction Coils By A FREDERICK COLLINS. Octavo, 295 pages, 159 illustrations. Price. $3.00. ( This work gives in minute details full practical directions for making eight different sizes of coils. varying from a small one giving a one-half-inch spark to a large one giving twelve-inch sparks. The dimensions of each and every part down to the smallest screw are given, and the directions are written in -Ian guage easily comprehended. Much of the matter in this book has never before been published as. for instance, the vacuum drying and impregnating processe5. the making of adjustable mica condensers, the construction of interlocking reversing switche. the set of complete wiring diagrams, etc The illus trations have all been made from original drawings. which were made especially for this work. .ny 0/ these books will be sent, postpaid, on receipt 0/ advertised price A Screw Loose? Door knob screws will I work loose, and keep on getting loose, until you set them once and for all by putting on the thread a little LEPAGES Glue, Metal or wood, it makes no difference-LEPAGES Glue holds that screw fast for life. LEPAGE'S GLUE in pin-sealing tubes is qnick, convenient, economical, no bad smell, no waste. Apply the tiniest drop or spread it over a square foot and what you stick stays stuck. Get 2 Tubes today One for your de.k One to carry home Send for Booklet, “GIuei.m'· It shows how to save many hundreds of dollars' waste. Russia Cement Co. We manufacture Glues (hard or liquid) in bulk for all industrial Purposes. 42 Essex AV.,Gloucester.Mass, Also in air-tight bottles with metal spreaders. V Library Slips with every m\ Bottle and Tube. BOYS DON'T DROWN your tools in cheap oil. A few drops of “ 3-in-One 11 makes brace and bit. plane, saws, all tools work perfectly — keeps them bright and clean, free from rust. Write to 3 IN ONE OIL CO. 42 A Z B Broadway, New York City. for generous sample bottle-FREE. M U N N&CO .• Inc., “Publishers 361 Broadway New York City Maxim Silencer Don't go in the woods without one! The .22 calibre Silencer enables you to shoot small game and hold target practice without frightening off big game. Attaches immediately to any .22 calibre rifle. Silencers are also furnished for all calibres above .22. Reduce recoil —improve marksmanship. Write today for new Catalog, just out. MAXIM SILENCER, Hartford, Conn.