322 University of California Publications in Boianij [Vol. 5 



LITERATURE CITED 

 Baur, E. 



1914. Eiufiihruug in die experimentelle Yererbungslehie. Berlin. 

 Bellair, G. 



1911. Recroisees entre elles deux espeees qui se sont degagees d'un liybride 



n'obeissent plus a la loi Mendelienne de la dominance. IV Conf. 

 Inter. Genetique, p. 200-213. 

 Brown, H. B. 



1913. Form and structure of certain plant hybrids in comparison with the 

 form and structure of their parents. Mississippi Agr. Exp. Sta. 

 Tech. Bull., no. 3. 



Clausen, R. E., and Goodspeed, T. H. 



1916. Hereditary reaction system relations — An extension of Mendelian 

 concepts. Proc. Nat. Acad. Sci., vol. 2, pp. 240-244, 

 East, E. M. 



1915. An interpretation of sterility in certain plants. Proc. Amer. Phil. 



Soc, vol. 53, pp. 70-72. 



East, E. M., and Hayes, H. K. 



1912. Heterozygosis in evolution and in ])lant breeding. U. S. Dept. Agr., 



Bur. Plant hid.. Bull. no. 243. 

 FOCKE, W. 



1881. Die Pflanzen Mischlingen. Berlin. 

 Gartner, C. F. 



1849. Versuche und Beobachtungen iiber die Bastanlzeugung im Pflanzen- 

 reich. Stuttgart. 

 Goodspeed, T. H., and Ayres, A. H. 



1916. On the partial sterility of Nicotituia hybrids made with N. sylvestris 

 as a parent. Univ. Calif. Publ., Bot., vol. 5, no. 9, pp. 273-292. 



Goodspeed, T. H., and Clausen, R. E. 



1915a. Variation of flower-size in ]\ icotiaiia. Proc. Nat. Acad. Sci., vol. 1, 



pp. 333-338. 

 1915&. Factors influencing flower-size in Nieotiaiia, with special reference 

 to questions of inheritance. Amer. Journ. Bot., vol. 2, pp. 332-374. 

 1916. Mendelian factor differences versus reaction system contrasts in 

 heredity. Amer. Naturalist (in press). 

 Kolreuter, J. G. 



1761-66. Vorliiufige Nachricht von einigen das Geschleeht der Pflanzen 

 betreffenden Versuchen und Beobachtungen. Leipzig. 

 Lock, R. H. 



1909. A preliminary survey of species crosses in the genus N^icotiana from 

 the Mendelian standpoint. Ann. Royal Bot. Gardens, Peradeniya, 

 vol. 4, pj). 19.5-228. 



Naudin, Ch. 



1863. Nouvelles recherches sur I'hybridite des vegetaux. Nouv. arch, du 

 Mus. I. 



Setchell, W. a. 



1912. Studies in Nirotiana I. Univ. Calif. Publ., Bot., vol. 5, no. 1, pp. 1-86. 



