First lesson in zoology : adapted for use in schools . Fio. 171.—Oeratodus, or Australian Lung-libh. point.) ^Ilit loll m uutuiL ends in a lung-fish (Lepidosiren) lives in the rivers of Brazil. Thesethree lung-fish, with their amphibious habits, whose alliesbegan to exist in Devonian times, long before the coalperiod, unmistakably point to the appearance of a new andhigher type of vertebrate life,—the Amphibians, or Sala-. FiG. iTZ.—Protopterus annectens, a Lung-flsh of Africa. (One third natural size.) manders, etc. If their limbs were stronger, jointed, anddivided into toes like those of a f
First lesson in zoology : adapted for use in schools . Fio. 171.—Oeratodus, or Australian Lung-libh. point.) ^Ilit loll m uutuiL ends in a lung-fish (Lepidosiren) lives in the rivers of Brazil. Thesethree lung-fish, with their amphibious habits, whose alliesbegan to exist in Devonian times, long before the coalperiod, unmistakably point to the appearance of a new andhigher type of vertebrate life,—the Amphibians, or Sala-. FiG. iTZ.—Protopterus annectens, a Lung-flsh of Africa. (One third natural size.) manders, etc. If their limbs were stronger, jointed, anddivided into toes like those of a frogs, they would be ableto walk and live on land. The transition from a swimmingto a walking air-breathing animal is a remarkable one; yetwe should bear in mind that at first the tadpole is withoutlimbs and breathes by gills. LiTBRATTjEB. — Hyrtl: Lepidosiren paradoxa. Prag, 1845.—Oiinther: Description of Ceratodus. PhU. Trans., 1871. CHAPTER SALAMANDER, FROG, AND OTHER AMPHIBIANS. A SALAMANDER is rather a puzzle to many persons, whocall the land species lizards, and the newts fish-with-legs. And so the latter are; for in most respects, sare theirlegs, the newts are only a slight step higher than a fish. The red-hacked salamander is not uncommon through-out the Northern States in damp places under leaves; andsouthward the yellow spotted salamander is as common asany. The student should have a speci
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1894
