. Elements of human physiology. Physiology. 318 PHYSIOLOGY gastric juice may then be evoked at any time by allowing the animal to eat in the ordinary way. Thus obtained it is a clear, colourless, acid liquid, with a specific gravity varying from 1001 to 1010. Its chief constituents are two ferments, pepsin and rennet ferment; and free hydrochloric acid. The amount of free HCl in the gastric juice varies from 0"2-0*3 per cent, in man to 0*6 per cent, in the dog and cat. It also contains salts, and a large amount of water which constitutes about 98 per cent, of its bulk. The hydrochloric ac
. Elements of human physiology. Physiology. 318 PHYSIOLOGY gastric juice may then be evoked at any time by allowing the animal to eat in the ordinary way. Thus obtained it is a clear, colourless, acid liquid, with a specific gravity varying from 1001 to 1010. Its chief constituents are two ferments, pepsin and rennet ferment; and free hydrochloric acid. The amount of free HCl in the gastric juice varies from 0"2-0*3 per cent, in man to 0*6 per cent, in the dog and cat. It also contains salts, and a large amount of water which constitutes about 98 per cent, of its bulk. The hydrochloric acid is shown to exist in a free condition Fig. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Starling, Ernest Henry, 1866-1927. Chicago : W. T. Keener
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