126 MAMMARY APPARATUS OF THE MAMMALIA 



Fig. 44. — Nipple Development of "Sciueus 

 VULGARIS." Embeyo, No. 7. (Beesslau.) 



[<i, Uj, and », The four primary-primordia ; ir and o, .smaller 

 pectoral and abdominal primary-primordia separated from larger 

 primordia and shifted medio-ventrally. 



