Combining' all the above individnal measurements, we obtain the 

 following- average for all of our forty-nine specimens from the state : 

 total length, i8i mm. (7.13 in.) ; length of tail, 32 mm. (1.26 in.) ; 

 length of head and body, 148 mm. (5.83 in.). The proportion of the 

 specimens of the various lengths is indicated by the accompanying fre- 

 quency polygon. 



Fig. 1. Polygon of lengths of forty-nine 



INDIVIDUALS ok the COMMON MOLE. 



