“Quant à ce qui concerne la prétendue incubation d’œufs d’Infusoires dans l’infusion, il faudrait d’abord prouver l’existence de ces œufs. Les dit-on trop petits pour être aperçus, c’est avouer qu’on ne peut rien savoir de leur existence. * * * Croire que partout où l’on rencontre des Infusoires, ils ont été précédés d’œufs, c’est donc admettre une pure hypothèse, qui n’a d’autre fondement que l’analogie. * * * Si c’est seulement par l’analogie qu’on suppose des œufs chez eux, il faut accorder à

Having been compelled by the results of my investigations on the question of the Origin of Life to arrive at conclusions adverse to generally received opinions, I found that several persons having high authority in matters of science, were little disposed to assent to these views. To a great extent this seemed due to the fact that a distinguished chemist had previously gone over some of the same ground, and had arrived at precisely opposite conclusions. M. Pasteur has been long known as an able

Bacteria and Torulæ being already in existence, they may, undoubtedly, reproduce organisms similar to themselves by processes of fission and gemmation—in the same way that other low protistic organisms propagate their kind. Although so many reasons rendered this view probable, it was some time before I was able actually to confirm it by personal observations in the case of Bacteria . In the ordinary microscopical examination of portions of an infusion containing these organisms, an observer may

It has been long known that Bacteria and Torulæ are frequently to be found within vegetable cells, taken even from the central parts of plants, whenever these are in a sickly condition or are actually dying. They are apt to exist also within epithelial cells taken from the inside of the mouth; and the frequency and abundance with which such organisms are met with in these cells, is almost in direct proportion to the malnutrition and lack of vital power in the individual who is the subject of obs

The evidence on this part of the subject is, I think, sharply defined and conclusive. Simple experiments can be had recourse to, which are not admissible in the discussion of the question as to the origin of Bacteria and Torulæ by Heterogenesis. There, we wish to establish the fact that living matter is capable of undergoing a certain metamorphosis, and consequently, we must deal with living matter. Here, however, with the view of establishing the fact that living matter can arise de novo , if w

No. I.—Urine in twenty-four hours was still clear and free from deposit. In forty-four hours the fluid was very slightly turbid, and on microscopical examination Bacteria and Torulæ were found, though not in very great abundance. In sixty-eight hours the fluid was quite turbid. No. II.—Hay Infusion in twenty-four hours was still clear. In forty-four hours the fluid was very turbid, and a drop on examination showed multitudes of Bacteria of different kinds, exhibiting languid movements. In sixty-

No. XVI.—Simple Turnip Infusion in twenty-four hours had undergone no apparent change. In thirty-six hours there was slight turbidity, and in forty-eight hours this was most marked and uniform. When the flask was opened, after seventy-two hours, there was an outrush of very fœtid gas; the reaction of the fluid was acid, and, when examined microscopically, it was found to contain multitudes of very languid Bacteria . No. XVII.—Neutralized Infusion of Turnip +   1 / 2  gr. of Cheese , 53 in thirty

No. XXII.—Urine in twenty-four hours showed no change; though in forty-six hours the turbidity was well marked . 56 Examined microscopically it was found to contain an abundance of Bacteria . No. XXIII.—Urine in eighteen hours showed a distinct pellicle, though there was not much general turbidity. During the next few days the old pellicle fell to the bottom, and a new one formed. No. XXIV.—Urine in forty-eight hours showed no change. After twelve days there was still no general turbidity, thoug

No. XXXI.—Healthy Urine remained in the warm bath for twenty-eight days without undergoing the least change. No. XXXII.—Simple Turnip Infusion remained in the warm bath for twenty-eight days without undergoing any appreciable change . 59 On breaking the neck of the flask, the fluid was found to be quite odourless. With its neck quite open, the flask was replaced in the water-bath. During the first forty-eight hours it underwent no apparent change, though at the end of seventy-two hours a slight

No. XXXVIII.—Turnip Infusion in ten hours showed a slight amount of turbidity. After forty-eight hours this was very well-marked: there was a thick pellicle on the surface, and, in addition, a small amount of deposit. On examination, the fluid and the pellicle were found to contain an abundance of Bacteria , Vibriones and Leptothrix filaments. No. XXXIX.—Turnip Infusion +   1 / 20 of Carbolic Acid after eight days showed no appreciable alteration in appearance , 64 no trace of pellicle or deposi

No. XLVIII.—Ammonic Acetate Solution. —On the tenth day the fluid was still quite clear, and free from sediment. No. XLIX.—Ammonic Oxalate Solution. —On the tenth day there was no distinct opalescence of the fluid, but a well-marked whitish flocculent deposit. On microscopical examination no Bacteria were found in the fluid, and the deposit was made up by an aggregation of blackish and colourless granules, mixed with a few crystals and a very few Torula cells—all being held together by a sort of

“ Bruce won the source of the Blue Nile; Speke and Grant won the Victoria source of the great White Nile; and I have been permitted to succeed in completing the Nile Sources by the discovery of the great reservoir of the equatorial waters, the Albert N’yanza, from which the river issues as the entire White Nile. ”— Preface. NEW AND CHEAP EDITION OF THE ALBERT N’YANZA. 1 vol. crown 8vo. With Maps and Illustrations. 7 s. 6 d. Barker (Lady). —STATION LIFE IN NEW ZEALAND. By Lady Barker . Second and

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