No. 1, May, 1921] GENETICS 39 



257. Fruwirth, C. Wicke mit linsenformigen Samen. [Vetches with lens-shaped seeds.] 

 Zeitschr. Pflanzenzucht. 7:35&-362. 1 fig. 1920. 



258. Galippe, V. Nouvelles recherches sur la presence d'organismes vivants dans les 

 cellules des glandes genitales males (microbiose, parasitisme normal ou accidentel). [New 

 studies on the presence of living organisms in the cells of the male genital glands (microbiosis, 

 normal or accidental parasitism).] Compt. Rend. Acad. Sci. Paris 169: 255-258. 1919. 



259. GERBAtTLT, E. L. Heredites chez la Cymbalaire (premiere contribution). [Heredity 

 in Linaria cymbalaria. First contribution.] Bull. Sec. Linn. Normandie VII, 2: 111-116. 

 1919. 



260. Glaser, Otto. Fertilization and egg-secretions. [Abstract.] Anat. Rec. 20: 227- 

 228. 1921. — 1. Egg secretions have been known for some time from the eggs of at least 10 

 species of echinoderms, 2 of annelids, 2 of tunicates, and 1 of molluscs. To this list another 

 mollusc, the oyster, and 2 vertebrates, the fish, Fundulus heteroclitus, and the frog, Rana 

 pipiens, are added by the author. — 2. The importance of these secretions in the initiation of 

 development has been demonstrated by a variety of methods. One of these, that of washing 

 the eggs, has been criticized because in the 18-36 hours required to remove all traces of their 

 exudates the eggs themselves may undergo serious deteriorations of other sorts. By using 

 running sea water, the author has succeeded in shortening this period to 3 or 4 hours, and by 

 removing their jelly and exposing the eggs to charcoal, he has succeeded in sterilizing them 

 completely in 30 minutes. — 3. The secretions agglutinate spermatozoa and initiate develop- 

 ment. These effects are due, not to 1 substance with 2 side-chains, as postulated in the 

 Fertilizin Theory, but to 2 chemical entities, the lipolysin on the one hand, and the agglutinin, 

 on the other. — i. The lipolysin is a lipolytic ferment and catalyses the hydrolysis of the esters 

 of the lower as well as the higher fatty acids. It may be that more than 1 ferment is involved. 

 — 5. The agglutinin very possibly is also a ferment, but the process which it catalyses has 

 not yet been found. — 5. A study of the specificities of fertilization must take account of the 

 lipolysin and of the agglutinin. With respect to the former, it is possible to employ lipolysins 

 derived from the eggs of Arbacia, Asterias, and of the oyster, for the purpose of increasing the 

 fertility of Echinarachniiis eggs partially sterilized by the removal of their own secretions; 

 with respect to the agglutinin, it is possible to increase very greatly the success of crosses 

 between Echinarachnius parma and Arbacia punctulata, if one kind or the other of their sex 

 cells, but especially the spermatozoa, is treated with species-true egg secretion prior to insemi- 

 nation. It appears therefore that the agglutination reaction involves specific features 

 because species-true agglutinin has effects quantitatively and perhaps qualitatively different 

 from those of heterogeneous agglutinins. — Whatever transformations views on the initia- 

 tion of development may undergo within the next few years, the zone within which an under- 

 standing must be sought is now marked off by the reaction capacities of perfectly definite 

 physiological compounds. — Otto Glaser. 



261. Golds CHMiDT, R. Einfiihrung in die Vererbungswissenschaft. Zwanzig Vorlesungen 

 fiir Studierende, Aerzte, Ziichter, Dritte neubearbeitete Auflage. [Introduction to the sci- 

 ence of genetics. 20 lectures for students, physicians, breeders. 3rd revised edition.] 519 p., 

 178 fig. W. Engelmann: Leipzig, 1920.— See Bot. Absts. 8, Entry 336. 



262. GoLDscHMiDT, R. Der Mendelismus in elementarer Darstellung. [Elementary 

 presentation of Mendelism.] 77' p., 15 fig. P. Parey: Berlin, 1920.— See Bot. Absts. 8, Entry 

 335. 



263. GoLDSCHMiDT, Ri CHARD. Untersuchuugen zur Entwicklungsphysiologie des Fliigel- 

 musters der Schmetterlinge. I. Mitteilung. Einige Vorstudien. [Investigations on the 

 physiology of development of the color pattern of the wings in butterflies. I. Some preliminary 

 studies.] Arch. Entwicklungsmech. 47: 1-24. 12 fig. 1920. 



