336 GENETICS [Bot. Absts. 



2214. Whiting, P. W. Inheritance of white-spotting and other color characters in cats. 

 Amer. Nat. 53: 473-482. Nov.-Dec, 1919. — Previous work by author on inheritance in cats 

 is summarized, and in addition new findings are added. The inheritance of various types of 

 ticking and of the different degrees of white-spotting (including self-white) are discussed. 

 Restricted white spotting is considered dominant to self-pigmented. Self-white is also dom- 

 inant to self-pigmented. — -"The principle is suggested that there is a quadruple allelomorphic 

 series: W, solid white; w m , much spotted; ivl, little spotted; and iv, self, with dominance in 

 the degree of decreasing pigmentation." — H. L. Ibsen. 



2215. Whiting, P. W. Genetic studies on the Mediterranean flour-moth, Ephestia kiihni- 

 ella Zeller. Jour. Exp. Zool. 28: 413-445. 2 pi., 1 fig. July 5, 1919.— Taxonomy, distribu- 

 tion, source of the material used and technique are discussed. Low fertility due mostly to 

 defective oviposition was experienced. Variations in size are apparently not hereditary, 

 while characters relating to leg spines and external male genitalia have not been tested. En- 

 vironment appears to affect inheritance of defective labial palpi. The abnormality of cleft 

 tongue is inherited but depends on environmental conditions, among which humidity is im- 

 portant, for its expression. In color inheritance sooty is a simple dominant to type, and black 

 a simple recessive, while in the homozygous black moths sooty acts as a recessive. This 

 the author considers a case of reversed dominance due to a simple Mendelian difference. Vari- 

 ations in quantity of a color producer and a color inhibitor are supposed to determine color 

 variations, and a chart illustrating this conception accompanies. — R. K. Nabours. 



2216. Wicks, W. H. The effect of cross-pollination in size, color, shape and quality of 

 the apple. Monthly Bull. State Comm. Hortic. California 7: 568-573. Oct., 1918. —Practice 

 of planting commercial apple orchards in alternate varieties to cause normal development of 

 fruit is upheld. No benefit is derived in size, color, shape or quality, from foreign pollen. 

 Conclusions based on results of hand-pollinations of varieties Ben Davis, Jonathan, Wine- 

 sap and Grimes. — T. H. Goodspeed. 



2217. Yamaha. [Rev. of: Allard, H. A. The Mendelian behavior of aurea character 

 in a cross between two varieties of Nicotiana rustica. Amer. Nat. 53 : 234-238. 1919. (See 

 Bot. Absts. 2, Entry 1195; 3, Entry 217.)] Bot. Mag. Tokyo 33: 166-167. 1919. 



2218. Yamaha. [Rev. of: Weatherwax, P. Gametogenesis and fecundation in Zea 

 mays as the basis of xenia and heredity in the endosperm. Bull. Torrey Bot. Club 46: 73-90. 

 1919. (See Bot. Absts. 2, Entry 717.)] Bot. Mag. Tokyo 33: 165-166. 1919. 



2219. Zalla, M. [Rev. of: Benard, R. Neuf cas de polydactylie hereditaire au cours 

 de cinq generations. La polydactylie dans ses rapports avec les lois de Mendel. (Nine cases of 

 hereditary Polydactyly in five generations. Polydactyly in its relation to Mendel's law.) Nou- 

 velle Iconogr. Salpetriere 28 3 - 3 : 1916-1917.] Riv. Patholog. Nerv. Ment, 24: 127-128. 1919. 



2220. Zeleny, Charles. A change in the bar gene of Drosophila involving further de- 

 crease in facet number and increase in dominance. Jour. Gen. Physiol. 2: 69-71. Sept. 20, 

 1919. — In a "downward" selection experiment with "bar"-eye stock of Drosophila melano- 

 gaster (bar eye being characterized by a small number of facets), author obtained an "ultra- 

 bar" mutant giving rise to a race having about one-third as many facets as bar. Ultra-bar 

 acts as a dominant allelomorph of bar and has a much greater degree of dominance over nor- 

 mal than has bar. It probably represents a "second mutation in the same germinal material 

 and in the same direction as a previous mutation." It occurred in the direction of selection. 

 — Chas. W. Metz. 



