214 - GENETICS [BoT. Absts., Vol. IX, 



variety, egg disintegration beginning before fertilization can take place. More rapid tube 

 growth at higher temperature may explain self-fertility under certain climatic conditions in 

 varieties which are usually self-sterile. — /. P. Shelton. 



1345. Lathoitwers, V. Variations speltoides dans desligneespuresdeFromentet dans une 

 population d'Epeautre. [Speltoid variations in pure lines of wheat and in a population of 

 einkorn.] Bull. Soc. Roy. Bot. Belgique 54:218-223. 1921.— In 1919 in 2 pure lines belonging 

 to different varieties of wheat, under observation since 1913, 2 aberrant plants were found, 

 having the same aspect as those described by Nilsson-Ehle of Svalof under the name "spel- 

 toid mutations." The author studied the 2nd generation of these, besides an aberrant plant 

 in a "population" of einkorn. His observations did not permit him to draw any definitive 

 conclusion. He hopes that the 3rd generation will demonstrate whether mutation or spon- 

 taneous hybridization has occurred. — Henri Micheels. 



1346. LiLLiE, Frank R. Studies of fertilization. IX. On the question of superposition 

 of fertilization on parthenogenesis in Strongylocentrotus purpuratus. Biol. Bull. 40: 23-31. 

 1921. — In a series of carefully controlled experiments, the author shows that eggs of Strongylo- 

 centrotus purpuratus, which have formed membranes as a result of treatment with butyric 

 acid, are usually incapable of fertilization with sperm even though the membranes are de- 

 stroyed by shaking immediately after they have been formed; exceptions (1-5 per cent) are 

 explained by the assumption that the reaction after treatment with butyric acid is incomplete. 

 The membrane reaction following butyric acid is the same as that following insemination; 

 this is shown by similarity of the membranes formed in the 2 cases, and by the fact that the 

 rate of formation is the same. — Bertram G. Smith. 



1347. LiNDSTROM, E. W. Concerning the inheritance of green and yellow pigments in 

 maize seedlings. Genetics 6: 91-110. 1921. — The author analyzes the inheritance of 3 

 colors in the seedling leaves of maize. These colors are known as white, virescent, and yellow, 

 and the factor pairs are designated Ww, Vv, and LI. These 3 leaf-color factors are found to 

 be independent in inheritance and in addition the LI factor pair for yellow leaves is found to 

 be closely linked with the Rr factor pair for the aleurone color of the seeds. There is but 

 1.6 per cent of crossing over between the LI and Rr factors. — /. H. Kempton. 



1348. LoTSY, J. P. Oenothera-proeven in 1919. [Oenothera experiments in 1919.] Genet- 

 ica 2: 385-399. 1 pi., 3 fig. 1920. 



1349. Love, James Kerr. The origin of sporadic congenital deafness. Jour. Laryngol. 

 Rhinol. and Otol. 35: 263-270. 1920. — The paper undertakes to show that "sporadic congenital 

 deafness is hereditary and that such heredity is Mendelian." The subject is discussed theo- 

 retically, and cases are cited to show that the deafness behaves as a Mendelian recessive. A 

 chart of "The Ayrshire Family" gives a concrete illustration and shows 5 affected generations 

 descended from a common ancestor 3 generations further back. The family is Scotch but 

 has branches in America and Australia. — Howard J. Banker. 



1350. MacDonald. Arthur. Scots and Scottish influence in Congress. Metron 1: 

 140-155. 1920. — A brief description is presented of the racial constitution of the Scotch and 

 their characteristics emphasizing especially their "independence, persistence, and zeal for 

 education," fearlessness, and family feeling. These qualities are illustrated by the perfor- 

 mances of Scotch immigrants to the U. S. A. and the many Scotch political leaders in American 

 history. Then follows a statistical analysis of the Senate of the 62nd Congress of the U. S. A. 

 and its legislative work shoAving the leadershij) of the Scotch constituency. The paper closes 

 with a comment on the decreasing number of great statesmen, attributing this to the increase 

 in complexity of the environment through social inheritance "while our inherited natures 

 remain unchanged;" "social heredity has outrun germinal heredity." — Howard J. Banker. 



1351. March AL, E. Recherches sur les variations numeriques des chromosomes dans 

 la serie vegetale. [Studies on the numerical variations of the chromosomes in plants.] Mem. 



