Neue Litteratur. 115 



Wagner, A. 1917. Ueber eine unzweekmässige Einrichtung im Blüten- 

 baue von Lobelia laxiflora. (Ber. deutsch, bot. Ges. XXXV. p 

 360-369. 1 T.) , 



Wagner, J. 1916. Uj Centaureafajvegyüldkek [Neue Flockenblumen 

 Bastarde]. (Mag. bot Lap. XV. p. 231—235. 1 T.) 



Willis, J. C. 1917. The relative age of endemic species and contro 

 versial points. (Ann. of Bot. XXXI. p. 189—208.) 



Wright, S. 1917. On the probable error ofMendelian class frequencies 

 (Amer. Nat. LI. p. 373—375.) 



Wylie, R. B. 1917. A hybrid ragweed. (Bot. Lab. State Univ. Iowa 

 p. 127—128. 1 pl.) 



Zederbauer, E. 1917. Alter, Vererbung und Fruchtbarkeit. (Verh. k. k 

 zool. bot. Ges. Wien. LXVII. p. (81)— (87).) 



VI. Physiologie. 

 Cf. II. Schmidt. 



Davidson, J. 1916. Selective permeability and the plasma-membrane. 



(Plant World. XIX. p. 331—394.) 

 Fischer, H. 1916. Zur Frage der Kohlensäure-Ernährung der Pflanzen. 



(Gartenflora. LXV. p. 232—237.) 

 Fred, E. B. and E. J. Graul. 1916. The gain in nitrogen from growth 



of legumes on acid. (Res. Bull. Wisconsin agr. Exp. Stat. 19i6. 39. 



42 pp. 2 pl. 16 f.) 

 Mangham, S. 1917. On the mechanism of translocation in plant tissues. 



An hypothesis, with special reference to sugar conduction in 



sieve tubes. (Ann. of Bot. XXXI. p. 293—311. 2 f.) 

 Measham, Ch. E. C. 1917. On the movements executed by young 



fern fronds, with special reference to geotropism. (Rep. british 



Ass. Adv. Sc. 1916 London 1917. p. 511.) 

 Miller, E. C. 1917. Daily Variation of water and dry matter in the 



leaves of com and the sorghums. (Proc. nation. Ac. Sc. U. S. A. 



III. p. 427—431 and Journ. agr. Res. X. p. 11—45. 1 pl.) 

 Molisch, H. 1916. Der Tabakrauch und die Pflanze. (Urania. IX. p. 



265-267.) 

 Molliard, M. 1917. Production artificielle d'une galle. (C. R. Ac. Sc. 



Paris. CLXV. p. 160—162.) 

 Oelkers. 1917. Jahrring und Licht. II. (Zschr. Forst- u. Jagdw. IL. p. 



371-388. 1 A.) 

 Osterhout, W. J. V. 1917. Does the temperature coefficient of permeability 



indicate that it is chemical in nature? (Bot. Gaz. LXIII. p. 317 — 320.) 

 Pember, F. R. 1917. Studies by means of both pot and Solution cul- 



ture of the phosphorus and potassium requirements of the barley 



plant during its different periods of growth. (Bull. Rhode Island 



agr. Coli. Exp. Stat. 1917. 169. 50 pp. 2 pl. 3 f.) 

 Pickering, Sp. 1917. The effect of one plant on another. (Ann. of Bot. 



XXXI. p. 181-187. 3 f.) 

 Prankerd, T. L. 1917. On the distribution of starch in the branches 



of trees, and its bearing on the statolith theory. (Rep. british Ass. 



Adv. Sc. 1916 London 1917. p. 511.) 

 Rosett, J. 1917. Observations on a new type of artificial osmotic 



cell. (Plant World. XX. p. 37—57. 3 f.) 

 Sauvageau, C. 1917. Sur le mouvement propre des chromatophores. 



(C. R. Ac. Sc. Paris. CLXV. p. 158—159. 1 f.) 

 SeheUenberg, H. C. 1916. Die transitorische Stoffspeicherung in den 



Hülsen von Phaseolus vulgaris L. (Ber. Schweiz, bot. Ges. 1916. 



24/25. p. XXV-XXVI d. Sitzb.) 



