. A text-book of comparative physiology [microform] : for students and practitioners of comparative (veterinary) medicine. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. n Um cog (aflOT Howm). 9. Section of the aboTe f Moond fnrrow, viewed 5. The Mune, on appear- above. 7. LongitMUniU ippaaranoe of fourth and hti)' later ttaoe than the m«te mptdljrlhan lower. 9 of It. 14. Becmentlns tlon of Mme. 18 and 15 >f embryo at a itaoe later iplblaan U, yolk-bearing lut): W, hypoblaat; m«. ^bio-sptnal) asU. n floating upward, oined in pontion, using a h
. A text-book of comparative physiology [microform] : for students and practitioners of comparative (veterinary) medicine. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. n Um cog (aflOT Howm). 9. Section of the aboTe f Moond fnrrow, viewed 5. The Mune, on appear- above. 7. LongitMUniU ippaaranoe of fourth and hti)' later ttaoe than the m«te mptdljrlhan lower. 9 of It. 14. Becmentlns tlon of Mme. 18 and 15 >f embryo at a itaoe later iplblaan U, yolk-bearing lut): W, hypoblaat; m«. ^bio-sptnal) asU. n floating upward, oined in pontion, using a hand lens, though thia ii not eaential to getting a fair knowledge; in fact, if Uie exam- ination goes no further than tlie naked-eyo appearances of a doien eggs, selecting one every twenty- four hours during incubation, when opened and the shell and membranes well cleared away, such a knowledge will be sup- plied as can be obtained fnmt no books or lectures however good. It will be, of course, understood that the student approaches these examinations with some ideas gained from phites and previoiu reading. The latter will furnish a sort of biological pabulum on which he may feed till he can supply for himself a more natu- ral and therefore more healthful one. While these remarks apply with a certain degree of force 'to all the departments of physiolo- gy, they are of special impor> tance to aid the constructive fac- ulty in building up correct no- tions of the successive rapid transformations that occur in the development of a bird or mftmmal. Fig. 99 shows the embryo of the (bird at a very early poiod, when already, however, some of Fi«.».—Kmbwo fowl 8 mm. long, of ., '',. _, , about twMiCT-foarboata, lean mm the mam outlines of structure ^ - ' — —— - are marked out. Development in the fowl is so rapid that a few days suffice to outline all the principal organs of the body. In the mammal the process is slow- er, but in the main takes place in the same fashion
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Keywords: ., bookauthormillswes, bookcentury1800, bookdecade1890, bookyear1890
