Abstract

All zoologists, who have accepted the placental system of classification of the Mammalia, agree in placing the Ruminantia amongst the Indeciduata.As is well known, the fœtal portion of the placenta in Ruminants consists of a number of distinct cotyledons. Each cotyledon is composed of numerous branched villi, which fit into pits or depressions situated in mound-like elevations of the wall of the uterus, called the maternal cotyledons.

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