. Elements of histology. Histology. Chap. II.] Blood. ii. about -g^j-o of an inch on the broad, and T^Joo" °^ an inch on the narrow side. But there are always corpuscles present which are much smaller by about one-third to one-half than the others. In normal blood these small red corpuscles are scarce; in certain abnormal conditions, especially anemia, or scarcity of blood, they are more numerous. According to Gulliver, Welcker, and others, the following are the measurements of the sizes of red blood corpuscles of various vertebrates :—man, A B ^^ C Fig. 6.—Various kinds of Eed Blood Corp
. Elements of histology. Histology. Chap. II.] Blood. ii. about -g^j-o of an inch on the broad, and T^Joo" °^ an inch on the narrow side. But there are always corpuscles present which are much smaller by about one-third to one-half than the others. In normal blood these small red corpuscles are scarce; in certain abnormal conditions, especially anemia, or scarcity of blood, they are more numerous. According to Gulliver, Welcker, and others, the following are the measurements of the sizes of red blood corpuscles of various vertebrates :—man, A B ^^ C Fig. 6.—Various kinds of Eed Blood Corpuscles. A, Two human, one seen from the broad, the other from the narrow side; b, a red corpuscle of the camel; c, two red corpus- cles of the frog, one seen from the broad, the other from the narrow side. elephant, 3200 > i . 2745 J 5000 y ; pigeon, ^ftt > toad> d°g> mnro J cat> Toko \ sneeP> horse, ^Vo \ musk deer> T2W5 rcnnr J newt> irhr l proteus, ^; pike, -^Vo y shark> 1 1142" 11. In a microscopic specimen of fresh unaltered blood (Fig. 7) the red blood corpuscles form peculiar shorter or longer rolls, like so many coins, becoming adherent to one another by their broad surfaces. Under various condi- tions—such as when isolated, or when blood is diluted with saline solution or solutions of other salts (sulphate of sodium or magnesium) —the corpuscles lose their smooth circular outline, shrinking and In a further stage of this process of shrinking they lose their discoid form, and. 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 Klein, E. (Edward), 1844-1925. Philadelphia : H. C. Lea's Son
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