618 W. Wendler: Physikalische Physiologie 1923—1924 [44 
latter case, between the state of growth of the controls and that of X-rayed 
material there appeared no great difference. But in the former case the irra- 
diated showed the better growth in an earlier stage. 4. In the case of steeped- 
irradiated material, 15 H seedlings generally grew well. The5H,7 Hand 10H 
seedlings were poorer in growth than the controls at the time of germination, 
but in the further growth stages surpassed them. 5. The acceleration of germi- 
nation varies with the current (in the case of the same material and the same 
hour of exposure) and the hour of irradiation (in the case of the same material 
and under the same current) in a definite tube.‘ 
463. Kotzareff, A. et Chodat, F. De l’action exercee par l’ema- 
nation du Radium sur les levures. (C.R. Soc. Phys. et d’Hist. Nat. 
Geneve 40, 1923, p. 36—39.) 
464. Lopriore, G. Azione antipatogena dei raggı X. (Staz. Sper. 
Agrar. Ital. Modena 57, 1924, p. 405-412.) — Ref. in Bot. Ctrbl., N.F.7, 
1926, p. 424-425. 
465. Liters, H. und Christoph, H. Über die Abtötung von Hefe 
durch ultraviolette Strahlen. (Ctrbl.f. Bakt., Abt. II, 59, 1923, p.8 
bis 13.) — Ref. in Bot. Ctrbl., N. F. 3, 1924, p. 232. 
466. Petry, E. Zur Kenntnis der Bedingungen der biologischen 
Wirkung der Röntgenstrahlen. III.Mitt. Wirkung von Oxyda- 
tionsmitteln auf die Empfindlichkeit. (Biochem. Zeitschr. 135, 1923, 
p. 353— 383.) — Ref. in Bot. Ctrbl., N.F.3, 1924, p. 389. 
467. Schinz, H.R. Grundfragen der Strahlenbiologie (Klin. 
Wochenschr. 3, 1924, p. 2397—2400.) — Ref. in Bot. Ctrbl., N.F.5, 1925, 
p- 392—393. 
468. Schwarz, G., Czepa und Schindler. Zum Problem der wachs- 
tumsfördernden Reizwirkung der Röntgenstrahlen bei höheren 
Pflanzen. (Fortschr. a. d. Gebiet d. Röntgenstr. 31, 1924, p. Me — 
Ref. in Bot. Ctrbl., N. F.5, 1925, p. 18—19. 
469. Semmens, E. S. Effect of moonligsht on the ae 
of seeds. (Nature 111, 1923, p. 49—50.) 
470. Sierp, H. und Robbers, F. Über die Wirkung der Röntgen- 
strahlen auf das Wachstum der Pflanzen. (Strahlentherapie 14, 
1922, p. 538—557.) 
471. Sokoloff. Be Contribution au probleme de J’anarchie 
cellulaire. (C. R. Soc. Biol. 91, 1924, p. 1148—1150.) — Ref. in Bot. Ctrbl., 
N.F.5, 1925, p. 212. 
472. Stoklasa, J. et Penkava, J. La radioactivite des gaz Eerup- 
tifs du Vesuve et des solfatares de la Campanie et leur influence 
sur le developpement des bacteries et des plantes superieures. 
(©. R. Acad. Sei. Paris 179, 1924, p. 819—822; auch: Intern. Agrik.-wiss. 
Rundschau, Rom, N. F.1, 1925, p. 359—363.) — Ref. in Bot. Ctrbl., N. F. 7, 
1926, p. 14—15. 
473. Tanner, F. W. and Ryder, E. Action of ultra-violet light 
on yeast-like Fungi II. (Bot. Gazette 75, 1923, p. 309317.) — Ref. 
in Bot. Ctrbl., N. F. 3, 1924, p. 198. 
474. Vasileseu, ©. Le vert lumiere associe aux techniques 
habituelles de coloration des graisses et des degenerescences 
amyloides. (C. R. Soc. Roumaine Biol. 91, 1924, p. 769.) 
