20 H. W. MARETT TIMS. 



that of a carnivore such as the dog ; special differential staining might bring out 

 unimportant differences in the minor details. It is impossible from the material at 

 hand, there being no complete series, to determine whether the placenta is of the more 

 " plicate " (Strahl) or the more " cumulate " (Duval) type. 



In conclusion, may I once more tender my roost grateful thanks to Professor 

 Jeffrey Bell of the British Museum (Natural History) for having entrusted the material 

 to me for examination and to Mr. E. Assheton for his kindly assistance in reporting on 

 the structure of the placenta. 



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