. A first book of zoology [microform]. Zoology; Zoologie. V.^'^ 5.^.„ SOMK FAMIFJAR MAMMALS t(Kl The teoth bfhimi thi- <liui»tenm in youn^ hrrbivorouH unimulB huvo topn or rrouriH into crPMcontic ruitten (homo. cow. «heep. .leor), whorean a piR or hippopotamuM hag conical elevations on these teeth. In the mlulta of these herbivorous form, the crowns become flat by constant use. In some herbivorous animals—the ruminanlH-so-calletl because th,v take a meal and then at leisure force the food back into the mouth and carefully chew it—the KrindinK teeth are practically alike in siz
. A first book of zoology [microform]. Zoology; Zoologie. V.^'^ 5.^.„ SOMK FAMIFJAR MAMMALS t(Kl The teoth bfhimi thi- <liui»tenm in youn^ hrrbivorouH unimulB huvo topn or rrouriH into crPMcontic ruitten (homo. cow. «heep. .leor), whorean a piR or hippopotamuM hag conical elevations on these teeth. In the mlulta of these herbivorous form, the crowns become flat by constant use. In some herbivorous animals—the ruminanlH-so-calletl because th,v take a meal and then at leisure force the food back into the mouth and carefully chew it—the KrindinK teeth are practically alike in size and shaiie. all having broad tops, although some of these—the premuian. —have, like the incisors and canines, been preceded in the. PIC Fid. lOZ-Skull o« I'm (. |». younK by teeth called milk teeth, whilst some at the back of the mouth called the molars have never been preceded by milk teeth. In many mammals— oats, dogs, ami ourselves, the premolars differ in appearance from the molars. Gnawing animals, like the rabbit, K'opher, rat, and mouse, have two upper and two lower incisor teeth,' which are continually firrowinR. and would jfrow .so lon^ as to be useless and cause the animal's death by starva- tion, were it not for the fact that the ^nawin^ habit results in the ends of these incisor teeth being continually worn 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 Burlend, T. H; Cornish, George A. (George Augustus), 1872-1960. Toronto : Macmillan
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectzoology, bookyear1915
