. The feeding of animals. Feeds. VSB OF THE DIGESTED FOOD 139 color. The liquid in which they are suspended is called the plasma. ^00. The blood corpuscles (Fig. 6).—^The corpuscles are not mere masses of unformed matter, but they are minute bodies having a definite form and structure. They make up from 35 to 40 per cent of the blood, and con- tain over 30 per cent of dry matter. This dry matter con- sists mostly of hemoglobin, a compoimd that is peculiar to the blood and equips it for one of its most important offices. Hemo- globin, when broken up in the absence of oxy- gen, is found to be ma
. The feeding of animals. Feeds. VSB OF THE DIGESTED FOOD 139 color. The liquid in which they are suspended is called the plasma. ^00. The blood corpuscles (Fig. 6).—^The corpuscles are not mere masses of unformed matter, but they are minute bodies having a definite form and structure. They make up from 35 to 40 per cent of the blood, and con- tain over 30 per cent of dry matter. This dry matter con- sists mostly of hemoglobin, a compoimd that is peculiar to the blood and equips it for one of its most important offices. Hemo- globin, when broken up in the absence of oxy- gen, is found to be made up of a protein (globin- histone) and a coloring matter (hemochromogen) in the latter of which is combined a definite proportion of iron. When broken up in the pres- ence of oxygen we get globin and hematin, as hemo- chromogen when oxydized becomes hematin. The peculiar property of hemoglobin which renders it so useful a con- stituent of the blood is its power of taking up oxygen and holding it in a loose combination until it is needed. Fig. 6. Red and white corpuscles of blood (magnified). A, red corpuscles; a, a, white cor- puscles; B, C, D, red corpuscles, more highly magnified; F, G, white corpuscles, more mag- 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 Jordan, Whitman H. (Whitman Howard), 1851-1931. New York, The Macmillan Company
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