No. 2, December, 1921] GENETICS 81 



GENETICS 



George H. Shtjll, Editor 

 James P. Kelly, Assistant Editor 



(See also in this issue Entries 403, 405, 457, 459, 460, 565, 574, 649, 650, 661, 668, 



816, 832, 833, 837) 



510. Anonymous. [Rev. of: Rawes, A. N. Sterility in plums. Jour. Roy. Hort. Soc. 

 46: 353. 1921.] Gard. Chron. 70: 107. 1921. 



511. Alvbrdes, F. [German rev. of: Alverdes, F. Das Verhalten des Kerns der mit 

 Radium behandelten Spermatozoen von Cyclops nach der Befruchtung. (The beliavior of the 

 nucleus of radium- treated spermatozoa of Cyclops after fertilization.) Arch. Entwicklungsmech. 

 47:375-398. 1921.] Zeitschr. Indukt. Abstamm.- u. Vererb. 26: 301. 1921. 



512. Alverdes, F. [German rev. of: Habcker, V. (1) Entwicklungsgeschichtliche 

 Eigenschaftsanalyse (Phanogenetik). Gemeinsame Aufgaben der Entwicklungsgeschichte, 

 Vererbungs- und Rassenlehre. (Developmental analysis of characters (Phaenogenetics). 

 General problems of development, heredity and eugenics.) 344 P-, 181 fig. G. Fischer: Jena, 

 1918 (see Bot. Absts. 1, Entry 121G; also 3, Entries 45, 2184). (2) Uber die Ursachen regel- 

 massiger und unregehnassiger Vererbung. (On the causes of regular and irregular inheritance.) 

 Flugschr. Deutsch. Ges. Zucht. 50. 20 p. Berlin, 1920. (3) Uber weitere Zusammenhange auf 

 dem Gebiete der Mendelforschung. (On further correlations in the field of Mendelian in- 

 vestigation.) Pfliigers Arch. Gesam. Physiol. 181: 149-169. 1920.] Zeitschr. Indukt. Ab- 

 stamm.- u. Vererb. 26: 302-308. 1921. 



513. Alverdes, F. [German rev. of: Just, GiInther. Der Nachweis von Mendel- 

 Zahlen bei Formen mit niedriger Nachkommenzahl. Eine empirische Priifung der Geschwister 

 und Probandenmethode Weinbergs auf Grund von Kreuzungsversuchen mit Drosophila 

 ampelophila Low. (The determination of Mendelian ratios in forms with low nimiber of off- 

 spring. An empirical test of Weinberg's method on the basis of crossing experiments with Dro- 

 sophila ampelophila Low.) Arch. Mikrosk. Anat. 94: 604-652. 1920.] Zeitschr. Indukt. 

 Abstamm.- u. Vererb. 26: 308-310. 1921. 



514. Alverdes, F. [German rev. of: Poll, Heinrich. Mischlingsstudien VIII. Pfau- 

 mischlinge, nebst einem Beitrag zur Kern-Erbtrager-Lehre. (Hybridization studies VIII. 

 Peafowl hybrids and a comment on the theory of nuclear bearers of heredity.) Arch. Mikrosk. 

 Anat. 94: 365-458. 5 fig. 1920 (see Bot. Absts. 7, Entry 1819).] Zeitschr. Indukt. Abstanam.- 

 u. Vererb. 26: 310-312. 1921. 



515. Bartos, W. Der Einfiuss der Veredlung auf den Wert der Riibe. [The influence of 

 breeding on the value of the beet.] Zeitschr. Zuckerindust. Bohmen 42: 299-302. 1918. — 

 The author presents a summary of data collected between 1897 and 1916 for Bohemian beet 

 crops. The steady rise in sugar percentage as well as in average weights of roots and foliage 

 is credited to the plant breeder, for even where greater fertilization is partially concerned 

 the plants must be of a kind capable of profiting by it. [From anonjTnous review in Zeitschr. 

 Pflanzenzlicht. 6: 98. 1918.]— J. P. Kelly. 



516. Bateson, W. The progress of Mendelism. Nature 104: 214-216. 1919.— The 

 author presents a review of recent work in genetics ("physiology of breeding"), touching on 

 Morgan's linear arrangement of genes, time of segregation, sex linkage, sex determination, 

 cumulative factors, and species crosses. Segregation is clearly connected with synapsis in 

 animals but not always in plants; somatic segregation and cases where male and female organs 

 of the same plant differ in the factors they carry are cited. The author suspects that plants, 

 as genetic machines, differ fundamentally from animals, an idea suggested by the fact that 



