Schencks Theory the Determination of Sex
Schencks Theory the Determination of Sex
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5 per cent, of saccharine matter is pres- ent. (Neumeister. ) In recent times, for qualitative and quanti- tative investigation of the grape-sugar, much use has been made of graduated fermentation- tubes.
For this experiment we mix about 10 cubic centimetres of urine with a small quantity of yeast of ascertained weight, and fill the 10 145 SCHENK'S THEORY fermentation-tube with the mixture. After the lapse of twenty-four hours, during which the whole is kept in an incubator at a tem- perature o...f 30 centigrade, all the grape-sugar will be completely fermented.
From the gaseous fermentation-products of the grape-sugar, which rise into the longer branch of the U-tube, and consist of carbonic acid, we detect the presence of sugar in the urine.
By means of the graduation of the longer branch, we can at once read off the percent- age of the sugar. This test is sensitive enough to detect 0. 05 per cent, of sugar. It is useful first of all to boil the urine to be tested, in order to remove from it the car- bonic acid contained in solution.
What to read after Schencks Theory the Determination of Sex?
You can find similar books in the "Read Also" column, or choose other free books by Samuel Leopold Schenk to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
5 per cent, of saccharine matter is pres- ent. (Neumeister. ) In recent times, for qualitative and quanti- tative investigation of the grape-sugar, much use has been made of graduated fermentation- tubes.
For this experiment we mix about 10 cubic centimetres of urine with a small quantity of yeast of ascertained weight, and fill the 10 145 SCHENK'S THEORY fermentation-tube with the mixture. After the lapse of twenty-four hours, during which the whole is kept in an incubator at a tem- perature o...f 30 centigrade, all the grape-sugar will be completely fermented.
From the gaseous fermentation-products of the grape-sugar, which rise into the longer branch of the U-tube, and consist of carbonic acid, we detect the presence of sugar in the urine.
By means of the graduation of the longer branch, we can at once read off the percent- age of the sugar. This test is sensitive enough to detect 0. 05 per cent, of sugar. It is useful first of all to boil the urine to be tested, in order to remove from it the car- bonic acid contained in solution.
What to read after Schencks Theory the Determination of Sex?
You can find similar books in the "Read Also" column, or choose other free books by Samuel Leopold Schenk to read onlineMoreLess
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