172 EXPERIMENT STATION RECORD. 



The author presents a very strong case in support of the theory of inheritance 

 of acquired Characters, and concerning his own method of studying evolution 

 says: "The actual transplantation of organisnas from one locality to another, 

 as a method of experimentation, promises the results of highest value and 

 widest significance, especially when taken in connection with analytical labora- 

 tory cultures. This method of approach is one which may yield evidence of 

 the greatest value upon the influence of isolation and other geographical factors, 

 but is also one which allows the repetitive or mnemonic effects to be evaluated. 

 When supplemented by laboratory analyses and cultures to determine the 

 nature of alterations induced, such methods promise results of the greatest 

 value." 



Recent work on the inheritance of acquired characters, W. B. AiiEXANDER 

 (Zoologht, //, ser., l.) (1910), No. 16S, pp. 4Jfl-Ji50). — A resume of investigations 

 by Standfuss, Tower, Kammerer, and others on this topic. 



Recent literature on Lamarck and Lamarckism, W. May (Zool. Zentbl., 18 

 {J911), No. 1-2, pp. 1-20). — A review of recent literature bearing on the inher- 

 itance of acquired characters, with a bibliography of 40 titles. 



A sketch of Mendel's life and work, D. J. Scourfield {Mendel. Jour., 1911, 

 No. 2, pp. 15-33, fig. 1 ) . — A brief resume of Mendel's work in heredity. 



The nucleus and heredity, V. H. Blackman {New Phytol., 10 {1911), No. 3, 

 pp. 90-99). — A statement of the reasons for assigning to the nucleus the major 

 part in the transmission of hereditary traits. 



The application of the conception of pure lines to sex-limited inheritance 

 and to sexual dimorphism, T. H. Morgan {Amer. Nat., 45 {1911), No. 530, 

 pp. 65-78). — This article discusses the treatment of sex as a Mendelian charac- 

 ter, the relation between sex and the inheritance of secondary sexual characters 

 and the bearing of sex-limited inheritance on the problem of the transmission 

 of characters in general. 



On the effect of a differential fertility on degeneracy, K. Pearson {Bio- 

 mctrika, 7 {1910), No. 3, pp. 258-275, dgms. 2). — ^A mathematical demonstration 

 that when there is a correlation between fertility and any character giving rise 

 to genetic or reproductive selection, it may largely neutralize or wholly defeat 

 the results of natural selection. In wild life it is difficult to find any character 

 perceptibly correlated with fertility, but with domesticated animals and in the 

 case of man "a differential fertility has been artificially established and the 

 influence of natural selection lessened. 



Fertility of hybrids between Bison americanus and B. europaeus, B. 

 IwANOFF {Com.pt. Rend. Soc. Biol. [Paris], 70 {1911), No. l-'t, pp. 58J,-586).— 

 Hybrids of both sexes proved to be fertile. 



On the determination of the chief correlations between collaterals in the 

 case of a simple Mendelian population mating at random, E. C. Snow {Proc. 

 Roy. Soc. [London], Ser. B, 83 {1910), No. B 561, pp. 37-55).— A mathematical 

 demonstration of the correlation of siblings (brothers or sisters), eldersibs 

 (uncles or aunts) with sibmags (nieces or nephews), and €f cousins in a 

 random population. 



The somatic correlation between siblings was found to be greater than that 

 between parent and ofi'spring. Grandparental correlation was the same as 

 avuncular, while that of cousins 's greater than that of grandparental. The 

 ancestral and collateral correlations in man and certain animals, founded on 

 blometric research are collected in the table following. 



