. A text-book of animal physiology [microform] : with introductory chapters on general biology and a full treatment of reproduction, for students of human and comparative (veterinary) medicine and of general biology. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. THE BLOOD. 149 3 tissues, an- as a whole, bat the most 3 temporary 1 requires to w, the whole generally sat- : a fluid and corpuscles— it is remem- ch makes up sistence. In usually more !olor may be taceans it is rtebrates the some slight ions possess colored cells and display sizes whic
. A text-book of animal physiology [microform] : with introductory chapters on general biology and a full treatment of reproduction, for students of human and comparative (veterinary) medicine and of general biology. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. THE BLOOD. 149 3 tissues, an- as a whole, bat the most 3 temporary 1 requires to w, the whole generally sat- : a fluid and corpuscles— it is remem- ch makes up sistence. In usually more !olor may be taceans it is rtebrates the some slight ions possess colored cells and display sizes which tly constant 3teristic. In below mam- ored corpus- 1, mostly bi- d nucleated Briods of the :istence ; in hey are cir- icave disks the camel orpuscles of >yal), and in nic life with- lus; nor do I a cell-wall } vary in size groups and the place the •e very large teing almost. Fio. -Photograph of colored frog. 1 X 370. (After FUut. luscies of visible to the unaided eye, while in the whole class of mam- mals they are very minute; their numbers also in this group are vastly greater than in others lower in the scale. The average size in man is TiW inch ("OOT? mm.) and the number in a cubic mil- limetre of the blood about 5,000,000 for the male and 500,000 less for the female, which would furnish about 250,000,000,000 in a pound of blood. It will be under- stood that averages only are spoken of, as all kinds of variations occur, some of which will be referred to later, and their significance explained. Under the microscope the blood of vertebrates is seen to owe its color to the cells chiefly, and, so far as the red goes, almost wholly. Corpuscles when seen singly are never of the deep red, however, of the blood as a whole, but rather a yellowish red, the tinge varying some- what with the class of ani- mals from which the spec- imen has been taken. Certain other viorpho- logical elements found in mammalian blood deserve bri%f mention, though their significance is as
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Keywords: ., bookauthormillswes, bookcentury1800, bookdecade1880, bookyear1889
