Proceedings of the Royal Physical Society of Edinburgh, Volumen11

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Página 154 - In the transactions of the Natural History Society of Northumberland, Durham, and Newcastle...
Página 13 - While the watery vapour was escaping by the glass tubes, I fastened at each end an apparatus which chemists employ for collecting carbonic acid ; that to the left was filled with concentrated sulphuric acid, and the other with a solution of potash. By means of the boiling heat everything living, and all germs in the flask or in the tubes, were destroyed, and all access was cut off...
Página 13 - I filled a glass flask half full of distilled water, in which 1 mixed various animal and vegetable substances ; I then closed it with a good cork, through which I passed two glass tubes bent at right angles, the whole being air-tight. It was next placed in a sand bath, and heated until the water boiled violently, and thus all parts had reached a temperature of 212° F.
Página 14 - ... from without entered the flask through the sulphuric acid. The air was of course not at all altered in its composition by passing through the sulphuric acid in the flask, but...
Página 13 - I placed near it an open vessel, with the same substances that had been introduced into the flask, and also after having subjected them to a boiling temperature. In order now to renew constantly the air within the flask, I sucked with my mouth, several times a day, the open end of the apparatus filled with...
Página 14 - May till the beginning of August, I continued uninterruptedly the renewal of the air in the flask, without being able, by the aid of the microscope, to perceive any living animal or vegetable substance, although, during the whole of the time, I made my observations almost daily on the edge of the liquid : and when at last I separated the different parts of the apparatus, I could not find in the whole liquid the slightest trace of infusoria, of confervae, or of mould.
Página 256 - the female is the outcome and expression of preponderant anabolism, and in contrast the male of preponderant katabolism
Página 14 - ... all the portions of living matter, or of matter capable of becoming animated, were taken up by the sulphuric acid and destroyed. From the 28th...
Página 13 - By means of the boiling heat every thing living, and all germs in the flask or in the tubes, were destroyed, and all access was cut off by the sulphuric acid on the one side, and by the potash on the other. I placed...
Página 255 - Is the difference significant in itself, or as an index of metabolic differences! If the eggs with more chromatin than their neighbours develop into females, and if chromatin be an index of a relatively preponderant anabolic capacity, can the theory be brought into line with the thesis of The Evolution of Sex...

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