1893.] 



NATURAL SCIENCES OF PHILADELPHIA. 



III. 



87 



Taking the head as the least variable portion of the three races, 

 and assigning to it an arbitrary value of 50 mm. in a hypothetical 

 individual by dividing the actual lengths of the other parts in mil- 

 limetres by their own length of head in millimetres, then multiply- 

 ing this product by 50, I get a new set of values in which the parts 

 are in the proportion of the preceding table, but in which the indi- 

 viduals are, in the case of each race, of about the same size, age and 

 condition of volume, and consonant with the modifications that 

 have been suffered by each one. This table is given below, and 

 from it it is possible to plot the outlines of the three hypothetical 

 frustums of cones that will represent approximately the condition 

 of development of the musculature of the body and tail of the 

 three races as seen from the side. 



IV. 



Distance 

 of anus from 

 base of cau- 

 dal. 



Common 

 race. 



Long-bodied 

 Japanese race. 



Short-bodied 

 Japanese race. 



42 mm, 



41 mm. 



263 mm. 



