The American journal of anatomy . d and third normal hillock, and in one case caudal to thethird. In the adult animals, however, he found that hypermas-tia rarely occurred, as only one case was reported from 150 obser-vations. In this one case the individual possessed a pair ofapparently functional glands just caudad to the last pair of tho-racic glands. In the 150 adult rats only one case of hypomastiawas found. In this case the individual lacked the first pair ofinguinal glands. In the present study, the number of glands present was notedin all animals available. From observations made on 10
The American journal of anatomy . d and third normal hillock, and in one case caudal to thethird. In the adult animals, however, he found that hypermas-tia rarely occurred, as only one case was reported from 150 obser-vations. In this one case the individual possessed a pair ofapparently functional glands just caudad to the last pair of tho-racic glands. In the 150 adult rats only one case of hypomastiawas found. In this case the individual lacked the first pair ofinguinal glands. In the present study, the number of glands present was notedin all animals available. From observations made on 100 indi-viduals ranging in age from 10 days to adults, SO were found topossess the normal number of mammary glands. Only one su-pernumerary gland was observed. It was located just caudad tothe third thoracic gland on the left side, the right side presentingthe normal number. In 12 cases the second thoracic gland wasapparently lacking on the right side only, while in 7 other casesthe second thoracic gland was lacking on both
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Keywords: ., bookauthorwi, bookcentury1900, bookdecade1910, booksubjectanatomy
