. On the anatomy of vertebrates. Vertebrates; Anatomy, Comparative; 1866. ANATOJiy OF VERTEBEATES. zygapophy=;t9 diai)oplijsi3 parapopliT^is - zygapopliysls 1 [neural Bplne ipurapophysis â 'ioCIS pleurapopliysis the bony or gristly levers on which they act. The limbs do not exceed two pairs. Tlie sexes are distinct, and tlie individual is developed directly from an impregnated ovum. Under the vertebrate plan of structure animals grow to a greater size and live a longer time, than under any of the invertebrate plans. § .3. Piscine modification. â All vertebrates, during more or less of their d
. On the anatomy of vertebrates. Vertebrates; Anatomy, Comparative; 1866. ANATOJiy OF VERTEBEATES. zygapophy=;t9 diai)oplijsi3 parapopliT^is - zygapopliysls 1 [neural Bplne ipurapophysis â 'ioCIS pleurapopliysis the bony or gristly levers on which they act. The limbs do not exceed two pairs. Tlie sexes are distinct, and tlie individual is developed directly from an impregnated ovum. Under the vertebrate plan of structure animals grow to a greater size and live a longer time, than under any of the invertebrate plans. § .3. Piscine modification. â All vertebrates, during more or less of their developmental life-period, float in a liquid of similar specific gravity to themselves. A large proportion, constituting the lowest organised and first developed forms of the pro- vince, exist and breathe in water. Of these a few retain the primitive vermiform condition and develope no limbs: in the rest they are ' fins,' of simple form, moving by one joint upon the body, rarely adapted for any other function than the impulse or guidance /, I hsmapopbyeis I [' lia;inal epino Ideal typical vertetoa- OSLT. and are called ' fishes.'. Blood-discs, eadi magnified 300 diameters linear. <u Man ; h, Jlnsk-decr: c. Goose; d, Cr'Xodile ; r, Frog ; /, Siren ; ;;, Cod-n=h ; 7/, Skate. CXLV. of the body through the water. The shape of the body is usually such as is adapted for moving with least resistance through a liquid medium. Tlie surface of the body is either smooth and Ivibricous, or is smoothly covered by ovcrlapyiing scales, is rarely defended by bony plates or roughened by tubercles, still more rarely armed with spines. The neural axis presents but one local enlargement, at the fore end, forming the ' encejihalon ;' it is small, and consists of a suc- cession of simple ganglionic masses, most of which are appro- priated to the function of a nerve of s^jccial sense. Touch is feebly exercised, and an organ for tliat sense rarely Please note that these images are ext
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Keywords: ., bookauthorowenrichard18041892, bookcentury1800, bookdecade1860
