thors. As to the microscopes of which he that never have the Alga of our country uments so perfect. Melly, besides, brought iration of microscopic objects; we may judge by Professor Thury in the interesting notice collection of Diatomeæ was twice resumed he distilled water and alcohol which he had olutely pure. iable, Melly had, moreover, that devotedness 1ost complete self-abnegation. Happy in the every feeling of envy and jealousy was so d not even admit the existence of these evil ffered in his dearest affections by the loss of henceforward completely isolated. But this egoistic, had still more enlarged his heart. tentions of which he was the object on the as amiable. The religious sentiments which ials so various and afflicting were always nce in regard to those who did not share his levated and disinterested nature, such as is iary 4, 1863, after long and acute sufferings. 1 an honorable family, and whose ancestors r to son; was born at Geneva, in 1793. After native city, he went in 1811 to Strasburg, of preparation in studying pharmacy, his rned to Geneva, took an active part in the 1817 was admitted a pharmaceutist after an rward Le Royer zealously occupied himself ofession. It was in 1818 that the illustrious ered himself as a clerk with Le Royer, and assistant. Besides these friendly connexions others with Dr. Prevost, taking part in many he latter in their chemical bearing. In 1821 his Society and of the Helvetic Society of of M. Dumas for Paris, in 1823, compelled t exclusively with pharmacy, and I know not ce 1824. Nevertheless, he preserved a taste the scientific labors of those who approached hom he had more than one trait of conformity, st to timidity, joined to delicate health, preat mark in science to which he might have st of the articles which he published jointly ed in the stomach of the herbivorê, (Memoirs ural History, vol. III, 2d part.) the ruminants, (Bibliotheque Universelle for APPENDIX We annex the following addi A few months ago there was a When the festival at Hettstä On the day after the festival, or nis intelectual faculties. APPENDIX ON THE TRICHINIASIS. he following additional information in respect to Trichiniasis, ne preceding article: s ago there was a festive celebration in Hettstädt, a small counhe Hartz Mountains, in Germany. Upwards of a hundred perto an excellent dinner, and having enjoyed themselves more rated, and went to their homes. e hundred and three persons, mostly men in the prime of life, e now in their graves; the majority of the twenty survivors lin-ful malady; and a few only walk apparently unscathed among in hourly fear of an outbreak of the disease which has carried mbers of their fellow-diners. Il eaten of a poison at that festive board, the virulence of which the reported effects of aqua tophana, or of the more tangible ed in toxicological text-books. It was not a poison dug out of racted from plants, or prepared in the laboratory of the chemist. poison administered by design or negligence. But it was a poison ll concerned; and was eaten with the meat in which it was conI which it formed a living constituent. . festival at Hettstädt had been finally determined upon, and the een ordered at the hotel, the keeper of the tavern arranged his bill e introduction of the third course, it was settled, should consist, as se parts of the country, of Rostewurst und Gemüse. The Rosteherefore, ordered at the butcher's the necessary number of days in order to allow of its being properly smoked. The butcher, on nt expressly to a neighboring proprietor, and bought one of two e steward, who had been commissioned with the transaction by his appears, however, that the steward, unfortunately, sold the pig aster had not intended to sell, as he did not deem it sufficiently fat itioned. Thus the wrong pig was sold, carried on a barrow to the led and worked up into sausages. The sausages were duly smoked ed at the hotel. There they were fried and served to the guests at able. ay after the festival, several persons who had participated in the e attacked with irritation of the intestines, loss of appetite, great and fever. The number of persons attacked rapidly increased; and was excited in the first instance by the apprehension of an impendic of typhus fever or continued fever, with which the symptoms obwed great similarity. But when, in some of the cases treated by the ician, the features of the illness began to indicate at first, acute perin pneumonia of a circumscribed character, next paralysis of the intercles and the muscles in front of the neck, the hypothesis of septic gh sustained in other cases, had to be abandoned with respect to these cases. Some unknown poison was now assumed to be at the bottom the Hartz mountains, trichina has never t with in sheep, oxen, or horses. Beef is as no parasites have ever been discovered ind in the blood, brain, or heart of those y love to reside.-British Medical Journal. has been found to be infested by trichinæ, fection of swine.] as induced a more careful investigation the imprudent use of hog's flesh, and fatal this country. It had, indeed, been long e trichina was occasionally found incysted States as well as in other countries, but no ence of the worms is known to have been , 1864, "an instance of the poisoning of member caused by eating ham" infested Dr. Schnetter in the city of New York.* some cases of a fatal nature noticed by Having been summoned to attend a man of Checktonaga, he found them afflicted eumatism of a somewhat peculiar characby the concurrent, belief of an associate, nised that the symptoms might indicate g soon afterwards died, a microscopical ted by Dr. Homberger, demonstrated the ncysted and free state." "The specimen these cases after death, and also the sauDr. J. R. Lothrop and Professor George Le trichina found in both in great numbers. the sausage incysted." Other members arasite, were only less unhappy in escaping WITHDRAWN FROM BY J. PLATEAU, PROFESSOR From the Memoirs of INTRODUCTION BY THE SECRET THE interesting investigations of an account consist of a series of par of the Brussels Academy. A transl in Taylor's Scientific Memoirs; th Institution, and the whole will be pu Smithsonian Annual Reports. The by which a liquid may be withdrawn, and left free to assume the figure or interaction of its own molecules. The second parts of the series have excited presented in popular lectures as precis of Saturn's ring, and almost conclusiv La Place as to the genesis of the sola It should, however, be observed that of the heavenly bodies and that in the d ferent, and can only give rise to accid results. Gravity, which is operative in known attractions, while its sphere of other hand, molecular attraction, which exceedingly energetic, while its sphere of contiguous particles, and becomes imper great power exhibited by the earth on from the combined effect of an immense nu that the attraction of the whole earth gives of 32 feet in a second, and by comparing centre of the earth, and a globe of the sam can easily calculate the velocity the latter wo The velocity thus determined is less than this result we may infer that small liquid m of vicidity, would never assume the form of gravitation. On the other hand, the great shown by the energy with which water is d substances. ES OF EQUILIBRIUM OF A LIQUID MASS DRAWN FROM THE ACTION OF GRAVITY, &c. EAU, PROFESSOR AT THE UNIVERSITY OF GHENT, ETC. From the Memoirs of the Royal Academy of Brussels. N BY THE SECRETARY OF THE SMITHSONIAN INSTITUTION. ng investigations of which we commence in this article to give ist of a series of parts originally published in the Transactions Academy. A translation of the first three parts was published ientific Memoirs; the remainder has been translated for this the whole will be published in this and the next volume of the nual Reports. The author has devised an ingenious method id may be withdrawn, as it were, from the influence of gravity, o assume the figure or external form which is produced by the s own molecules. The experiments described in the first and the series have excited much interest, and have frequently been pular lectures as precise illustrations of the mode of formation ng, and almost conclusive proofs of the truth of the hypothesis to the genesis of the solar system. owever, be observed that the force in operation in the phenomena y bodies and that in the experiments of our author are very difonly give rise to accidental similarities, and not to identical ity, which is operative in the first case, is the most feeble of all ions, while its sphere of action is indefinitely great. On the nolecular attraction, which is operative in the second case, is nergetic, while its sphere of action only extends to the nearest urticles, and becomes imperceptible at sensible distances. The exhibited by the earth on heavy bodies, near its surface, arises oined effect of an immense number of attracting atoms. We know ction of the whole earth gives to a body near its surface a velocity a second, and by comparing the masses and distances from the earth, and a globe of the same density and a foot in diameter, we culate the velocity the latter would give a small body near its surface. thus determined is less than that of an inch in a year. From e may infer that small liquid masses, possessed of a slight degree would never assume the form of a globule under the mere force of On the other hand, the great power of molecular attraction is he energy with which water is drawn into wood and other porous ; rise to the phenomena described in this the liquid, since these are only attracted on o exert their energy towards the mass, and e smallest compass, namely, that of a sphere. of water may be considered an assemblage of sed into the spherical form by a contractile. enclosed. The amount of contractile force › energy of the attraction between the concurvature. To illustrate this, let us suppose ed horizontally between two supports. If to all weight, the slip will sag downwards, and attached will descend until there is an equihe contractile force. If an additional weight ncreased until a new equilibrium is attained, ill increase with the degree of bending. A surface of all liquids. If this surface is horil in every direction in the horizontal plane; surface so as to bend it out of this plane, the rth, tending to bring the point back into its contractile force which causes a small globule ened, to spring back into the spherical form moved. The more the globule is compressed, e circumference, the greater will be the resistthe bubble the greater will be the contractile ore energetically will it assume the spherical action of gravity, the tendency of which to e the greater in proportion to the greater size, of the surface. he reader to comprehend more definitely the ed in the following paper. RST SERIES. J. H.] eans of satisfying the equilibrium or composed of alcohol and water This being supposed, if the molec the alcoholic mixture for itself, and cal, there would be no reason that th quid should take spontaneously on to all the forces acting upon it, it w equal mass of alcoholic mixture who that this identity between the differe the attraction of the oil for itself gre l therefore, ought to obey this exc We thus come to this conclusion, lated to a liquid mass without w mited to its own proper molecular s must take the spherical form. Well, experiment confirms all this whatever its volume, remains, in fact quid, and takes the form of a perfect 3. In order to obtain this singular Certain precautions, which I will des - an extreme molecular mobility, yield with are The first concern the formation of mixture necessarily varies with the k which I employed, and for the purity of marked twenty-two degrees on wishes to use olive oil, he may always imation, and, by successive attempts, the point which it ought to reach. To a the liquor, into which a little oil is afte funnel, which reaches about half way 14 S |