Licence: Public Domain Mark
Credit: The diseases of the stomach / by Dr. C.A. Ewald. Source: Wellcome Collection.
Provider: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.
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![2. Plypoclilorhydria. 3. Euclilorliydria. 4. Hyperchlorhydria. The curve in tlie accompanying figure (Fig. 4) may be taken as an example of tlie course of the secretion of HCl; it was constructed from a patient with a gastric fistula, from whom the stomach con- tents were taken at first every ten minutes, and later every half hour. Free HCl first ap- peared at the point marked with a *. Although the greater portion of the acidity of the stomach contents is due to HCl, yet the acid salts, especially the acid phosphates (sodic and potassic phosphates), which are introduced in variable amounts with the food, also participate in it, al- though to a lesser degree. As a rule, they are unimportant as compared to free HCl, and their significance has never been exaggerated by German writers, as stated by Hay em and Winter; yet it would be a gross error to simply disregard them in calculating the acidity. The presence of small quantities of lactic acid in the beginning of digestion is an entirely different matter. Small quantities of lactic acid may frequently be found at this time, when the lactic acid bacilh which have been introduced with the food have had an J ^ / ^ —< ^, / S / f [\, -1v5- > s \ \ ^ ■ y / y ■ 1 0. 0. 0 6 '.. 9 D 1 0 1 0 1 1 £1 2 10 MlhUTES ¥iG. 4.—Curve showing the course of the secretion of HCl after a test breakfast. The cross indicates the time at which free HCl tirst appeared. L'analyse de sac gastrique; the grammatical term is that given above. [I have retained throughout this work the term chlorhydria—i. e., amount of HCl—on ac- count of the convenience of its compounds in expressing in one word the differences in amount of HCl.—Ed.]](https://iiif.wellcomecollection.org/image/b21223026_0041.jp2/full/800%2C/0/default.jpg)
