Physiology of the carbohydrates : an epicriticism / by F. W. Pavy.

Date:
1895
Catalogue details

Licence: Public Domain Mark

Credit: Physiology of the carbohydrates : an epicriticism / by F. W. Pavy. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

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    proof is supplied in the details of the experiments themselves that the full extraction of glycogen was effected. I have repeated Dr. Patou’s experiments, and m other ways carefully gone over the ground of experi- mentation upon the subject. From the lengthy nature of the analytical operations required to be undertaken, anyone who has had experience in the matter will realise the expenditure of time and labour the work has involved. The first point noticeable in connection with the details to follow is the variability in the results obtained in different experiments. The amylolytic action occurring in the pounded with sand portions as compared with the minced is in all cases consider- able 3 and, evidence is forthcoming, both through the loss of glycogen and the gain of sugar, of its standing greater. Nowhere do the figures at all coincide with those belonging to Dr. Paton’s experiments. Where two sets of experiments were conducted upon the same liver, and different processes of analytical pro- cedure adopted, the results vary in such a mannei as to suggest complications arising out of the production of dextrins, which are differently influenced by dif- ferent strengths of alcohol. As is well known, the precise strength of alcohol existing constitutes a nice point in relation to the precipitation of glycogen and the dextrins. Where the carbohydrate is determined by titration with the copper test, with the assist- ance of treatment with sulphuric acid, we are upon