METEOROLOGY. 115 



Concerning the periodicity of root growth in plants, A. Wiki-eh (i^ors^ Centhl., 

 16 (1894), Xo. 7, pp. 3SS-34D). 



On the germination of the pollen grain and the nutrition of the pollen tube, 

 J. R. Green {Ann. Bot., ,S (1S04), pp. 225-22S). 



On the study of gaseous exchange between living beings and surrounding 

 air, Beuthelot {Ann. Cliim. ct Plujs., 7 {1894), No. 2, pp. 289-293). 



The fixation of free nitrogen by plants, H. L. Russell {Bot. Guz., 19 {1894). pp. 

 284-293).— A resumo. 



Intercellular communications of lichens, G. Poirault {Compt. Rend., 118 

 {1894), Xo. 24, pp. 1362, 1363). 



Concerning intramolecular respiration, N. Chudiakow {Landw. Jahrb., 23 

 {1894), Xo. 2 and 3, pp. 333-389, Jigs. 2). 



The energy of living protoplasm, O. Loew {College of Agr., Tokgo, Japan, Bui., 

 vol. 2, Xo. 1, pp. 1-22). 



Functional individuality of protoplasm and nucleus, J. Demoor {Bui. Soc. 

 Mirr. Belgium, 20 {1894), pp. 36-4(i; ahs. in Bof. Ceiitbl., 39 {1894), Xo. 1 and 2, pp. 

 24-25). 



Pistillodia of Podophyllum stamens, B. D. Halsted ( Torrcg Bui., {lS94),Xo. 21, 

 p. 269). 



The structure of the pedicel of the teleutospores of Puccineae, P. Vuillemin 

 {Bui. Soc. Bot. France, 41 {1894), No. 4, pp. 285-290). — A description of a uew spe- 

 cies of Uromi/ces, U. verrueipes, accompanies this article. 



Concerning the coloring matter of sunflower seed, A. Famitzin {Arbeit, bof. 

 lab. Akad. St. Petersburg, {1893), Xo. 6, pp. 3; abs. in Bot. Centhl., 58 {1894) Xo. 11, p. 

 379). 



Purpose and result of plant acclimatization, Gunther, Beck, and Manxagetta 

 {Wiener ill. Cart. Ztg., 19 (1894^ Xo 4, pp. 144-154). — A lengthy semipopiilar article 

 ou the subject. 



A method of cultivating anaerobic bacteria, W. Lubinski {Centbl. Bakt. u. 

 Far., 16 {1894), Xo. 1, pp. 20-25, jigs. 4). 



On the poisonous action of dicyanogen, O. Loew and M. Tsukamoto {College 

 of Agr., Tokyo, Japan, Bui., vol. 2, Xo. 1, pp. 34-41). — Effect of dicyanogen on various 

 plants and low animals as compared with effect of prussic acid. 



METEOROLOGY. 



f 

 Meteorology, W. Freak and W. S. Sweetser {Penn.s'ylmnia Sta. 

 Ept. 1S92, pp. 147-152, 161-lii7, 175-204).— The meteorological work of 

 the Peunsylvania Station during 1892 was along the same lines as in 

 previous years (E. S. E., o, p. 30), and included general observations 

 on atmospheric lilienomena, sunshine records, and soil temperatures. 

 Monthly summaries of meteorological observations and weekly crop 

 reports are given in tbe body of the report, and the detailed record of 

 daily observations in an appendix. 

 3714— No. li 3 



