HEREDITY 



crosses is both scientifically correct and com- 

 mercially remunerative. 



BIBLIOGRAPHY 



BOS, RlTZEMA. 



1894. " Untersuchungen ueber die Folgen der Zucht in 

 engster Blutverwandtschaft." Biol. CentrbL, 14, pp. 75- 

 81. 

 CASTLE, W. E., CARPENTER, F. W., CLARK, A. H., MAST, 



S. 0., 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. naturf. Gesellsch. zu 

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

 Weismann.] 



