First lesson in zoology : adapted for use in schools . Fio. 235.—Opossum, and side-view of pelvis, with the marsupial bone, M. pelvis, and projecting forwards. In the opossum, thekangaroo, and probably most marsupials, the young,which are very rudimentary and small when born, livein the pouch attached to the nipple, which fills themouth. To this it remains attached for a consid-erable period, the milk being forced down its throat bythe contraction of the cremaster muscle. The danger ofsuffocation is avoided by the elongated and conical form ofthe upper extremity of the larynx, which is embrace
First lesson in zoology : adapted for use in schools . Fio. 235.—Opossum, and side-view of pelvis, with the marsupial bone, M. pelvis, and projecting forwards. In the opossum, thekangaroo, and probably most marsupials, the young,which are very rudimentary and small when born, livein the pouch attached to the nipple, which fills themouth. To this it remains attached for a consid-erable period, the milk being forced down its throat bythe contraction of the cremaster muscle. The danger ofsuffocation is avoided by the elongated and conical form ofthe upper extremity of the larynx, which is embraced by
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1894
