194 LIFE HISTORY 



are similar to those found in America. For the Albinos from 

 Vienna, Paris and London, the determinations were made by 

 Donaldson ('12) and Chisolm ('11) has reported on the relation 

 of body length to body weight in albino and pied rats in London. 

 Chisolm compares his determinations of length with those by 

 Donaldson ('09) and when correction is made for the slight dif- 

 ference in the methods of measurements, the two sets of results 

 agree nicely. 



It is also true that the wild Norways of Europe seem to be 

 similar to those of the United States (Donaldson, '12) so that the 

 differences above noted probably will be found at whatever 

 stations the two forms are compared. 



LIFE HISTORY NORWAY RAT: REFERENCES 



Chisolm, '11. Crampe, 1884. Darwin, 1883. Donaldson, '09, '11, '12. Don- 

 aldson and Hatai, '11. Hatai, '14 a. India Plague Commission, '08. Jackson 

 andLowrey, '12. Lantz, '09. Lapicque and Girard, '07. Miller, '11. Watson, 

 C., '07. Zuschlag, '03. 



