June, 1920] CYTOLOGY 281 



the germ plasm. Author believes that "the structure of protoplasm is the structure of the 

 cell as an organized system and itself the unit in all the complex interactions by which the 

 egg develops into the specialized and differentiated many-celled organism." [See Bot. Absts. 

 3, Entry 2133.]— is 1 . W. Sinnolt. 



1935. Hibino, S. [Rev. of: Heusser, K. Neue vergleichende Permeabilitatsmessungen 

 zur Kenntnisse der osmotischen Verhaltnisse der Pflanzenzelle in kranken Zustande. (New 

 comparative measurements of permeability to ascertain the osmotic relations of diseased plant 

 cells.) Vierteljahrsschr. Naturforsch. Ges. Zurich 62: 565-589. 1917.] Bot. Mag. Tokyd 

 33:135-138. 1919. 



1936. Hibino, S. [Rev. of: Trondle, A. Der Einfluss des Lichtes auf die Permeabilitat 

 der Plasmahaut und die Methode der Permeabilitats-Koeffizienten. (The influence of light on 

 the permeability of the plasma-membrane, and the method of permeability coefficients.) Vier- 

 teljahrsschr. Naturforsch. Ges. Zurich 63: 187-213. 1918.] Bot. Mag. Tokyo 33: 138-140. 

 1919. 



1937. Hurd, Annie May. Some orienting effects of lights of equal intensities on Fucus 

 spores and rhizoids. Proc. Nation. Acad. Sci. [U. S. A.] 5: 201-206. 1 table. June, 1919. — 

 See Bot. Absts. 3, Entry 2909. 



1938. Kihara, Hitoshi. Uber cytologische Studien bei einigen Getreidearten. [Cyto- 

 logical studies of some cereal crosses.] Bot. Mag. Tokyo 33: 21-38. 21 fig. 1919. — See Bot. 

 Absts. 2, Entry 946; 4, Entry 627. 



1939. Kihara, Hitoshi. Ueber cytologische Studien bei Getreidearten. Mitteilung II. 

 Chromosomenzahlen und Verwandtschaftverhaltnisse unter Avena-arten. [Cytological Studies 

 in the Cereals. II. Chomosome counts in reference to the relationship of oat species.] Bot. 

 Mag. Tokyo 33: 94-97. 2 fig. 1919. — The following counts were obtained from root tips and 

 pollen mother-cells: (1) 7-14 chromosome form, Avena strigosa; (2) 14-28 chromosome form, 

 A. barbata; (3) 21^12 chromosome forms, A. fatua, A. sativa, A. sterilis, A. byzantina, and 

 A. algeriensis. He holds that these results are not inconsistent with the classification pro- 

 posed in 1914 by Zade based on the results of serum experimentation. — Leonas L. Burlingame. 



1940. Lynch, Vernon. The function of the nucleus of the living cell. Amer. Jour. 

 Physiol. 48: 258-283. 1919. 



1941. Moreaxj, Fernand. Une anomalie dans l'histoire nucleaire des spores de l'Endo- 

 phyllum Sempervivi Lev. [An anomaly in the nuclear division of spores of Endophyllum Sem- 

 pervivi.] Bull. Trimest. Soc. Mycolog. France 35: 98-101. 1 fig. 1919.— The author states 

 that the origin of binucleated spores among the Uredinales is generally attributed to the 

 fusion of uninucleated cells just below the aecium. Quite different however is the origin of 

 four-nucleate spores, which the author observed in Endophyllum Sempervivi. In Endophyl- 

 lum it is not the cellular fusion which brings about four-nucleate cells, for the spores contain- 

 ing four nuclei are not seen at the base. The young spores contain only two nuclei. The 

 nuclear division takes place within the older spores, forming spores with four nuclei. Two of 

 the four nuclei degenerate immediately, leaving two large nuclei which fuse within the older 

 spores. Occasionally the author observed some terminal spores containing six nuclei, attrib- 

 uted to the division of two nuclei of a primitive four-nucleate spore. The nuclear divisions 

 have the characteristics of the karyokinetic division of the Uredinales. — Fred C. Werkenthin. 



1942. Twiss, W. C. A study of plastids and mitochondria in Preissia and corn. Amer. 

 Jour. Bot. 6: 217-234. PI. SS-S4. 1919.— A review of the more important literature on mito- 

 chondria and their relation to plastids is presented, together with observations on these 

 structures in Zea Mays and Preissia commutata. The author obtained best results with 

 Benda's method for fixing and staining, which is outlined in detail. In the root tips of corn, 



