HEEEDITY 



crosses is both scientifically correct and com- 

 mercially remunerative. 



BIBLIOGEAPHY 



Bos, RiTZEMA. 



1894. " Untersuchungen ueber die Folgen der Zucht in 

 engsterBlutverwandtschaft." Biol. Centrbl., 14, pp. 75- 

 81. 

 Castle, W. E., Carpenter, F. W., Clark, A. H., Mast, 



S. O., and Barrows, W. M. 



"The Effects of Inbreeding, Cross-breeding and Selec- 

 tion upon the Fertility and Variability of Drosophila." 

 Proc. Amer. Acad. Arts and Sci., 41, pp. 731-786. 



GUAITA, G. VON. 



1898. "Versuche mit Kreuzungen von verschiedenen 

 Rassen des Hausmaus." Ber. natwrf. Gesellsch. zu 

 Freiburg, 10, pp. 317-332. [Contains observations of 

 Weismann.] 



