LITERATURE a 



1 ALLEN, C. E. : A Chromosome Difference Correlated with Sex Dif- 



ferences. Science, N. S., 1917, xlvi, 466, 467. 



2 ARNER, G. B. L. : Consanguineous Marriages in the American Popu- 



lation. Studies in Hist., Econ. and Pub. Law, 1909, xxxi, No. 3. 



3 BEAL, W. J. : Reports, Michigan Board of Agriculture, 1876, 1877, 



1881 and 1882. 



4 BELL, A. G. : Memoir upon the Formation of a Deaf Variety of the 



Human Race. Mem. Nat. Acad. ScL, 1884, pp. 86. 



5 BEMISS, S. M. : Report on Influence of Marriages of Consanguinity 



upon Offspring. Trans. Amer. Med. Assn., 1858, xi, 321-425. 



6 BERTHOLLET, S. : Phenomenes de 1'acte mysterieux de la fecondation. 



Mem. Soc. Linneonne de Paris, 1827, i, 81-83. 



7 BLYTH, E. : On the Physiological Distinctions between Man and all 



other Animals. Mag. Nat. His., N. S., 1837, i, 1-9, 77-85, 131-141. 



8 BONHOTE, J. L. : Vigour and Heredity. London, 1915, pp. 263. 



9 BOUDIH, M. : Dangers des unions consanguines et necessite des croise- 



ments dans 1'espece humaine et parmi les animaux. Ann. d'Hygiene 

 pub. et de Med. legale, 1862, xviii, 5-82. 



10 BRIDGES, C. B. : Non-disjunction as a Proof of the Chromosome 



Theory of Heredity. Genetics, 1916, i, 1-51, 107-163. 



11 BRIDGES, C. B.: Deficiency. Genetics, 1917, ii, 445-465. 



ia BRITTON, E. G. : A Hybrid Moss. Plant World, 1898, i, 138. 



13 BRUCE, A. B. : A Mendelian Theory of Heredity and the Augmenta- 



tion of Vigor. Science, N. S., 1910, xxxii, 627, 628. 



14 BRUCE, A. B. : Inbreeding. Jour. Gen., 1917, vi, 195-200. 



15 BURGEOIS, A. : Quelle est 1'influenee des mariages consanguines sur 



les generations? Theses L'ficole de Med., 1859, ii, No. 91. 



16 CARRIER, L. : The Immediate Effect of Crossing Strains of Corn. 



Virginia Agr. Exp. Sta. Bull. 202, 1911, pp. 11. 



a This list of literature makes no pretension of citing other than a few 

 of the most important books and papers on inbreeding published in pre- 

 Mendelian days. Those interested in the subject from the standpoint of 

 marriages of near kin can obtain access to the literature by following up the 

 citations of Huth and of Westermarck. The real development of the subject 

 has come from the investigations on heredity completed since the year 1900. 

 Since it is impracticable and unnecessary to cite all the genetic work of 

 this period, only those titles which are in some way directly connected with 

 the subjects discussed, have been given. 



