Beginners' zoology . There isthus 2^ cor-relation between struc-ture of neck and , The samecorrelation is found inwhich of the reotiles .-*(Why does rigidity oftrunk require flexibilitv 1 1 tt Question: Find two resemblances to reptiles in 01 neck .^) Why does Uus extinct bird absent from skeletons of extant

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Keywords: ., bookcentury1900, bookdecade1920, booksubjectzoology, bookyear1921