THE present Gnome rotating motor, 1 which is so widely used on flying machines, is not a French invention in prr1ciple, as many suppose. In 1898 the frst revolving cylinder motor made its appearance in this country, whkh was afterward embodied in the Adams-Far-well ear. The originators of that pioneer motor of its type have now brought out a 72-horse-power motor which revolves vel· tically. No carbureter is used. Gasoline is injected into each eylinder by a de-viC'e which feeds exactly the same mixture to all cylinders. Hence it is possible to do away with the inlet valve and to employ one valve for both inlet and exhaust. Only air is drawn in by the suction stroke of the pdston, and the gasoline is sprayed within the cylinder, where it is mixed with the charge of air before compression. The single valve in the head of the cylinder can be made amply large to insul'e a full charge and a free exhaust. In order that the cam whieh (,on troIs the action of all five valves may be relieved from the heavy load of opfminf a large valve against high pressure :It the time the exhaust takes place, the cylinders are provided with auxiliary exhaust ports, which are unwvAred hy the piston on its inward stroke. No eheck valves are required for thes, auxiliary ports. On the suetion stroke, pure air, Mortgage Bonds 6% TO YIELD Offered at Par and Interest DENOMINATIONS of $100 - $500 - $1,000 C AREFULLY selected. improved. income-producin g roel estate in the best district of New York City. conservatively ap prai sed at $8,500,000. has been pledged to a Trust Company, as Trustee, to secure these bonds. The management of the Company has had many years of successful experience dealing in this class of real estate. After an fixed charges ate paid, earnings are sufficient to guarantee the interest and set aside a handsome surplus. Improved New York City real estate is appreciating in value more rapidly than real estate in any other part of the world. and it will continue to advance in price as long as the United States continues to grow in importance. New York Real Estate Security Company 6 pr cent. Morgage Bond5 are a safe investment. No one can afford not to investigate this investment. NEW YORK REAL ESTATE SECURITY COMPANY 42 Broadway, New York City ASSETS CAPITAL SEND FOR BOOKLET “23 $10,000,000 950,000 NONA/ READV Vol. II. Obsolete American Securities and Corporations 1,200 Pages. Oontaining nothing that Is In Volume I. Delivered anywhere on receipt of $5.00 R. M. SMVTHE 452 Produce Exchange. New York. U. S. A FLY PAP E R S. - 1'ORM ULAS FOR Sticky ily Papers are contained in SCIlNriric AMURT-CAN SUPPLEMENT }os. l U;” and l32'. Each isKie containH severa1 recipes. Price 10 cents each, from this office. and from .l1 1ewsdealers. SI RIFE RAM Water in i Quantity all over your farm-house. feld I or ba'ru—pumph \ithout cost or \ trouhle for you l>y aHna m. °RduisP8 ' y'water RUfeet for oath foot of fall f- no trou ble or pumping ] I SatiR fultion gnarhlteed. Booklet. I plans. estimate, FREE. I RIFE ENGINE CO., 2rn3 Trinitv Bldg. N.Y. -no t er ou We have been asked If we use the name of the subscriber when writing to the people whose names appear on the lists sent in by our friends. Of course we do not mention the name of the person who sent us the list without permission. If this doubt has deterred you from sending us a list don't wait any longer. send in the list at once and rest assured that your wishes regarding the use of your name will be respected. All you need do Is simply send us the names of those whom you think the “Scientific American” will interest and we will do the rest. Of course the more names you send us the better will be the results obtained and the longer the period for which your personal subscription will be extended. For each new subscription received from the list you send us we will extend your subscription four months. Thus if we get three subscriptions from your list we will extend your subscription for a full year. Don't fail to put your name and address on each list you send us, so that we may be enabled to give proper credit. Mail all lists to Circulation Department, Scientific American, 361 Broadway, New York City. I Septer her 1(i, 1011 SCIENTIFIC AMERICAN 2GS ^Every Razor must be stropped Nil mattei what make of razor vou use, it will not keep its edge unless it is stropped every time you use it. Anyone, even the most inexperienced, can keep a razor in perfect condition with The New Torrey ^ f*% Honing Strop Over half a contm\ of strop making and our recent discovery of a wonderful sharpening pieparation have made this possible. The New Torrey Honing Stiop will Ust a lifetime and never need renewing If your dealer cannot show you this new strop, write to us and we will give you the addies-j of c dealer who can. Prices, 50c. 75i. SI.M, »l.25, $1.50. $2.00. $2.50 s Every d ealer who is not now selling the New Torrey Honing Strop should write at once for our special proposition. Our booklet -. all about shav-I ing—sent free l request. J. R. TORREY&CO. Dept. ( Worcester, Mass. 'TFLES C 0 e I Lit"'* ' W.D .MOGE 1 PLAINFIEID. N. J \i\ Tr?T?I*i'RExpert Manufacturers PARKER, STEARNS & CO., 288·290 Sheffield Ave., Brooklyn, N. Y. rjjgsnaaV 899 Clinton Sh-eet, |M|£J Corliss EIlgines, Brewers ami Bottlers' Machinery VILTER MFG. CO. Milwaukee, WI'So Corns Ended T he pain stops instantly. Within two da ys th e who le corn loo sens and comes out. Blue-jay has done this fifty million times. It will do it for you-that we guarantee-no matter how tough the corn. The secret li2s in a bit of B&B wax-a wonderful invention. It loosens the corn without soreness or pain. You don't feel it at all. The corn is forg otten unti l it comes out. Go get it. Don't let corns torment you any more. A in the picture is the soft B&1 wax. It loosens the corn. B protects the corn. stopping the pain at once. C wraps around the toe. It i” narrowed to be cOilliort'ble. D is rubber adhesive to fasten the plaster on. BIue = jay Corn Plasters Also Blue-jay Bunion PIasters ___ _ lSc and 25c per Package All Druggists Sell and Guarantee Tbem Sample mailed free. Buer&Black, Chicago and New York Makers of Surgical Dressings, etc. (13) and not a mixture of gas, is drawn i:. The air aspired through the auxiliary ports and suction stroke becomes a part of the explosive mixture in the cylinder, and since it is constant in quantity. it does not affect the operation of the motor. The motor is controlled by regulating the amount of gasoline used. The only adjustment that may be construed [S belonging to the carbureting system is the valve by which this control is accomplished. To lubricate the motor, an oiler is employed which consists of a single rotary member, much resembling in form the CYlinder of a revolver, with longitudinal chambers Jored therein. Each of these chambers carries a plunger which, as the cylinder revolves, is driven from end to end by two cams, thereby causing a small amount of oil to be drawn into each of the chambers at the bottom, and ejeeted into a corresponding tube at the top. An extra heavy grade of cylinder (IiI is thus supplied to the various bearings and to the cylinders, thereby ohviating the necessity of splash lubrication, which in other rotating cylinder motors calls for the flooding with a great quantity of oil, and the consequent gumming of the valves and sooting of the spark plugs. In order to insure against the acci flental stoppage of the motor. two spark plugs are provided for each cylinder, as well as two independent ignition systems. Instead of c i rculal fanges, longitudinal fanges are employed, as O result of a series of experiments to determine tllP action of the air in circulating about the cylinders of a rotating motor. Since the air is thrown off radially f rom the cylinder walls, it would sem that the logical arrangement of cooling ribs or fanges is that which has bpen adopted. There are structural advantag0s in placing the flanges in this way, for the cylinder is strengthened against tensile strain caused by the action of centrifugal force and the explosions. The material of which the motor is made is vanadium chrome nickel steel. The bore is 6 inches and the stroke likewise 6 inches. The rating is 72 horsepower by the A. L. A. 1J. formula (square the bore, multiply by the numbel' of cylinders, and divide by 2%). On actual propeller tests it is claimed th't more ]lower than this has been developed. Furthermore it is stated that a !oot 6.inch propeller, of 6 feet pitch, has be'm driven at 900 to 1.000 revolutions per minu t e. The makers sta te that only one gallon of l ubn:atlllm OJI IS used to 20 ga l1on' of gasoline, instead of 1 to 4. or 1 to ?, which is found necessary with European motors. ACCORDIXG to a German trade paper devoted to the interests of the moving pit-ture industry, the activities of the moving ]icture makers to obtain good flms of the coronation were equal to the exertions of any of the newspapers to pUJlish the fullest and best accounts of the ceremonies. All told, we learn, fourteen linns sent 200 operators to the coronation. They were well received and had to pay heavily for good positions, as much as $1,500 in one case. It is said that not less than 10,000,000 feet of film were requir·d, whieh was used up at a rate of about 200,000 feet an hour by each of the cameras. Many of the moving pieture theater owners had made a rrang e men t s to exhibit the coronation films- on the very eVBning of the coronation itself. Some of the railroads considerately :1laced special trains at the disposal of the manufacturers, and thus the films reached the provine8s with astonishing rapidity. The flms were developed on board the trains and positives made immediately. On the very night of coronation day films were thrown upon the screens at Liverpool, Manehester, Birmingham and even in Paris. The representative of a French firm, who took passage on the “Maure-tania.” developed his negatives and made his positives on board. Immediately on hlS arrival in America he distributed his flms to the various film exchanges with whom he had made arrangements.