No. r,so] 



L>07 



tions, but above all (5) that the facts are recorded entirely 

 without the influence of any bioloyiral theory, the mind 

 of the observer being absolutely fresh and unprejudiced. 



The observations published in 1909 by Wilfred H. Os- 

 good on the .mice of the genus Peromyscus 11 therefore 

 constitute a notable and wholly unbiased research on 

 bodily "characters" as they appear to a zoologist col- 

 lecting and observing in the field, but examining and re- 

 viewing his material in the museum. The following ab- 

 stract is mainly in the author's own language and has been 

 verified by him, although the order of treatment is rear- 

 ranged entirely and italics are added for emphasis in its 

 bearing upon the modes of origin of single characters in 

 living mammals. 



