No. 3, July, 1921] GENETICS 267 



1S91. Anonymous. South African's views of citrus methods used in California. [Rev. 

 of and extracts from: Fitzpatrick, Percy. Citrus growing in California. 32 p. National 

 Bank of South Africa, Pretoria, 1920 (see Bot. Absts. 8, Entry 1910).] California Citrograph 

 6:46, 62-64, 78, 99. 2 fig. Dec, 1920, and Jan., 1921. 



1892. Anonymous. [Rev. of: Gager, C. S. Heredity and evolution in plants, xv -f 

 265 J)., 113 illus. P. Blakiston's Son & Co.: Philadelphia, 1920 (see Bot. Absts. 6, Entry 

 1672; 7, Entry 1610).] Sci. Prog. [London] 15: 498. 1921.— See also Bot. Absts. 8,' Entry 

 1079 



1893. Alder, B. How to cull a flock of hens. Utah Agric. Exp. Sta. Circ. 42. 3-8, 5 fig. 

 1920.— Author gives directions for distinguishing between laying and non-laying hens on the 

 basis of the bodily changes which accompany the transition from one condition to the other.— 

 William A. Lippincott. 



1894. Anthony, R. Le pseudo-hermaphroditisme tubaire chez les Cetaces males. [Pseudo- 

 hermaphroditism in the male Cetaceans.] Compt. Rend. Acad. Sci. Paris 171: 1398-1399. 1920. 

 —Well developed male utricle and Muellerian ducts are regularly or occasionally found in 

 male Cetaceans. Author regards this condition as primitive. — A. Franklin Shull. 



1895. Becker, J. Xenien zwischen Melonen und Giirken. [Xenia in muskmelons and 

 cucumbers.] Zeitschr. Pflanzenzucht. 7: 362-364. Nov., 1920.— A testing out of the belief 

 that cross-pollination of melons and cucumbers leads to xenia as evidenced by undesirable 

 flavors. One cucumber resulted from 10 guarded hybridizations with melon pollen; its seeds 

 were undeveloped but its flavor was not unusual. — /. P. Kelly. 



1896. Benjamin, E. W. A study of selections for the size, shape, and color of hens' eggs. 

 Cornell Univ. Agric. Exp. Sta. Mem. 31. 189-312, 1 pi., 37 fig. 1920.— This report covers the 

 work of 8 years in which the author kept under minute observation and careful control large 

 flocks of single-comb white Leghorn hens from the high-producing, trap-nested stock of the 

 Cornell strain. Many correlation tables are presented.— The results show that a great deal 

 of variation exists in the size, shape, and color of eggs from a single hen. This variation 

 does not depend upon difference between the parents, but it is to some extent inherited. 

 Color tends to be more irregular than the other characters. Size, shape, and color are inher- 

 ited directly and equally from both parents. Small size and length of egg are dominant while 

 no dominance occurs for color. A definite correlation exists between the characters of the 

 egg set and those of the eggs of the hen it produces. This correlation, however, is not as 

 great as the correlation between the means of the eggs produced by parents and offspring. 

 No correlation was found between size, shape, and color, or any two of these characters. 

 The size of eggs increases rapidly during the early part of the pullet year, while pigment con- 

 tinues to become darker until the end of the 2nd laying year. The offspring from pullets' 

 eggs are not more variable than those from hens' eggs.— A positive correlation was found 

 between the size of the egg and the weight and vigor of the bird produced. Size, shape, and color 

 have no effect on the ability of the egg to hatch. — H. G. May. 



1897. Blaringhem, L. Anomalies fiorales observees sur la descendence de I'hybride 

 Linaria vulgaris X L. striata. [Floral anomalies observed in the descendants of the hybrid 

 Linaria vulgaris X L. striata.] Compt. Rend. Acad. Sci. Paris 169: 1103-1105. 1919.— The 

 Fi of the cross of Linaria vulgaris X L. striata was found to be partially sterile, and only 

 I7F2 plants were obtained. There was some sterility in the F2 and several cases of abnormal 

 floral development were observed. — Karl Sax. 



1898. Bridges, Calvin B. The mutant crossveinless in Drosophila melanogaster. Proc. 

 Nation. Acad. Sci. 6: 660-663. 1920.— Author describes "crossveinless," a sex-linked mutant 

 character in Drosophila melanogaster, and points out its usefulness in genetical experiments 

 and its apparent homology with "crossveinless" in D. virilis.— C. W. Metz. 



