The morning of the 7t!i dawned clear but with some floating clouds at this point Thousands of people were prepared with smoked glass, opera glasses, etc etc, to observe the remarkable event, although at New York the eclipso was to be only partial, a fact which the press lia'l made generally understood previously The scientific were anxious in regard to the news telegraphed from Chicago to the effect that the weather was not propitious, as although the eclipse would not be total at that point it was in sufficiently close proximity to thebelt of totality to give fears that the clouds might extend to some of the most important points where observations were to be attempted Up to the present writing, we have not the news from the different poin^ of observation, and are therefore unable to state how much success has been achieved by different expeditions, but will give a summary of the results in our next In all probability there will have been some disappointments To those who were not in position to observe this eclipse the following facts, with the accompanying illustrations, will serve to give a pretty good conception of the features of the phenomenon, and its importance The times of the beginning and ending of the eclipse at prominent points in the belt of totality have been already given in our issue of July 81st We herewith give a map showing the belt of totality in the Uniced States This belt was 140 miles in width The eclipse was also visible, but partially, far outside this belt The nearest lines drawn parallel to the belt show the limits between which ten digits of the sun's disk were covered, and the next the limits between which eight digits would be obscured A digit is one twelfth of the sun's diameter In the diagram of the middle of tho eclipse as it appeared in New York, the greatest obscuration, 10*6 digitsjs shown The obscuration of the sun's disk began in the lower righthand quarter, and the shadow passed off at the upper lefthand We also give a diagram of the corona and the protuberances observable in the belt of totality, which will give our readers an npM'osIinJvto Hra of thosj most remarkable appearances, The following descriptions of the corona and protuberances arc copied from an article published in the New York Tribune of the Gth inst : " In 1706, at Montpclier, the French astronomers saw the moon, when the sun was entirely hid, surrounded by a very white light, which formed a sort of corona or crown around its disk about three minutes of an arc in breadth, or one tenth the moon's apparent diameter Within these limits the light preserved a uniform intensity, and beyond it, to the extent of about four degrees all around the moon, the light was seen gradually diminishing, till it was finally Lost in the obscurity of the firmament " During the total eclipse of 1715 at London, some seconds before the sun was completely hid, Halley saw a luminous ring around the moon, the breadth of which was one twelfth, or perhaps a tenth, of her diameter To a French astronomer, who went to London for the purpose ot observing this eclipse, the corona or ring around the moon appeared of a silver color It was more luminous near the borders of the moon, and diminished gradually in intensity up to its exterior circumference This circumference, although faint, was very well denned The corona did not appear of equal intensity on every line radiating from its center Dark spaces or interruptions were observed in it, which gave it still more the appearance of the glory around the heads of saints This observer also saw at the innermost edge of the corona, a brilliant circle of red, which is probably the earliest notice of what we now call the red protuberances or projections In 1724, Maraldi observed for the first time that the luminous corona was not concentric with the moon These observations proved the corona to be concentric with the sun instead of with the moon, and that it is a phenomenon closely connected with the sun's physical constitution " THE ROSECOLORED PROTUBERANCES " The red protuberances were first seen by Yassenius at Grottenburg, May 3, 1733, and they have been observed at every total solar eclipse since that time These rosecolored prominences are of irregular form, sometimes rising nearly as high as the corona itself These phenomena were variously seen and described in the eclipses of 1778 and 1806, and in 1842 Arago saw the corona both with his telescope and the naked eye In the Sandwich Islands in 1830, and'on the coasts of Sweden and Norway in 1851, these curious appearances were still the objects of study It was not until the eclipse of 1860 that it was satisfactorily demonstrated that they belonged to the sun, and that the interposition of the moon merely enabled us to see them by cutting off the direct rays of the sun" The Government parties, sent out to different stations along the line of the total eclipse, were provided with the means of taking, in large telescopes, photographic impressions of the phenomena at their various stages These photographs can*be studied at leisure, and, in connection with the impressions left on the memory of the observers, will serve to determine very important questions as to the constitution of the sun Besides these usual means of observation, comparatively new instruments for detecting polarized light, and for determining the chemical composition of the sun, and of the corona and red protuberances, will be employed The spectroscope is the important instrument for making this curious chemical analysis of a distant object Our readers having read the accounts of observations of the eclipse of 1868, as observed principally by European astronomers, will appreciate the zest with which American scientists seized this opportunity to add to the important discoveries of last year Whatever valuable results have been obtained, will be duly referred to as they come to hand [The left liana diagram represents the sun five minutes after the commencement of the eclipse, when the moon has begun to make its appearance on the right The middle diagram represents the sun midway between the beginning and end of the eclipse, when the obscuration is the greatest; and the right hand diagram represents the sun five minutes before the termination of the eclipse] ,^^^g No GREAT achievement is possible without hard work Tlie Use of Glycerin in Wine We translate from " Wagner's Iahresbericht" the follow ing, which will be of interest to wine growers: Glycerin has been used for some time for the improvement of wines This process has been called Scheeleizing (from Scheelo the discoverer of glycerin) According to the investigations of Pasteur, Nessler, and Pohl, glycerin is a component part of wine As is well known, glycerin differs from the sugar, inasmuch as it does not ferment nor take any part in the process of fermentation, actively or passively These valuable properties have only recently been recognized and appreciated, and have given to glycerin, in addition to many other applications, a firm hold in the rational improvement of wine It is not our intention to undervalue the important part which grape sugar takes in pure wine, nor to supplant by glycerin this article, which cannot be dispensed with during the state of fermentation As soon, however, as the wine has passed the fermentation, the valuable functions of glycerin commence; for only by its aid is it possible to impart to the wine any degree of sweetness that may be required without incurring the risk of spoiling the wine or producing future changes thereon Nothing like that Even the greatest addition of glycerin is unable to endang, r the wine in any way, and a valuable rem^ edy has thus been discovered to improve even wines that are ready for bottling, which, to this date, has been considered entirely impossible An erroneous impression having gained ground that the glycerin could not be used for young or new wines, we can add that there is no reason why it should not be applied, with the same advantages stated above, to any wine as soon as it has become clear, and when it is necessary that it should not again ferment by an addition of sugar The sweetness and smoothness which glycerin imparts to wine will ever be apparent Regarding the manner of using the glycerin, we can only say that it is so simple that it hardly requires a detailed description The first and greatest consideration is, to procure a quantity of glycerin that is chemically pure, which is especially essential when it enters into consumption, and here we would say that There is scarcely another article in the market which is liable to contain so many impurities, owing to an imperfect or incorrect manner of manufacturing, or intentional adulteration to pro duce a cheap article Under these circumstances it is best to buy only of parties who will guarantee the article to be pure According to experiments thus far made, the addition of glycerin to wine, according to the quality of the latter, should be from one to three per cent, or for one hundred gal Ions of wine from one to three gallons of glycerin It will be necessary to apportion the maximum quantity of glycerin to be used to the quantity of wine in process of preparation ; add to the quantity of glycerin thus obtained the same measure of wine, and then impart enough of such mixture to the wine to give it the required taste The barrel of wine thus improved by glycerin will at once be ready for bottling, provided the wine was clear before We repeat: an addition of glycerin will not effect on wine any other changes than such as the latter is predisposed to by virtue of its inherent properties SOME recent experiments made at the Woolwich Arsenal, near London, encourage the hope that guncotton can be successfully used as a most destructive agent A palisade was built of oak timbers a foot thick, firmly fixed in the ground, and supported in the rear by strong trusses Disks of guncotton were placed along the face of the palisade about a foot above the ground, and were fired by a battery in the usual way The effect may be described as wonderful The palisade was literally blown away amid a deafening report, as if the massive timbers offered no more resistance on one side of the guncotton than the atmosphere on the other The disks require no fixing ; merely laying them on is sufficient Solid blocks of iron and stone can be shivered into fragments by firing a disk laid on the top In future sieges, if some desperate fellow can but get : to the gate or athinpart of the walls, and hang on a few disks \ of guncotton, a breach can be made by firing with a galvanic current from a long distance ***to THE most insignificant of human transactions can only be performed in the best manner by those possessed of all the knowledge bearing upon them Ignorance is always a dead weight, embarrassing him who carries it; on the contrary, knowledge is power"