66 Botanisches Centralblatt. 



appearance of a species of Evening Primrose (Oenothera Lamar- 



kiana, Ser.)- (Proc. Cheltenham Nat. Sc. Soc. III. p. 25 — 28.) 

 Bertsch, K. 1915. Primula acaulis X elatior Muret in Württemberg. 



(Allg. bot. Zschr. XXL p. 129.) 

 Bowman, H. H. M. 1916. Adaptability of a sea grass. (Science. N. S. 



XLIII. p. 244—247.) 

 Collins, G. N. and J. H. Kempten. 1916. Patrogenesis. (Journ. of Here- 



dity. VII. p. 106-118. 8 f.) 

 Daniel, L. 1916. Sur un fruit de noyer contenant une amande de 



coudrier. (Rev. gen. Bot. XXVIII. p. 11 — 14. 3 f.) 

 Gates, R. R. 1916. Huxley as a mutationist. (Amer. Nat. L. p. 126— 128.) 

 Herrera, A. L. 1915. Resume des principaux resultats obtenusjusqu'en 



Mars 1914. (Bol. Direcc. Est. biol. Mexico. I. p. 111 — 113. 1 f.j 

 Herrera, A. L. 1915. Teoria de las plantas metalicas de Traube y 



Leduc. [D. p.]. (Bol. Direcc. Est. biol. Mexico. I. p. 117—134. 10 f.) 

 Longo, B. 1915. Variazione nel Cosmos bipinnatus Cav. (Atti. r. Acc. 



Lincei. 5a. XXIV. p. 408—410.) 

 Marshall, E. S. 1916. A new hybrid willow-herb. (Journ. of Bot. LIV. 



p. 75—76.) 

 Minchin, E. A. 1916. The evolution of the cell. II. (Amer. Nat. L. 



p. 106—118.) 

 Sündermann, F. 1915. Neue Saxifraga-Bastarde aus meinem Alpen- 

 garten. [Forts.]. (Allg. bot. Zschr. XXI p. 113—116.) 

 Torres, E. 1915. Lavado de las plantas metalicas. (Bol. Direcc. Est. 



biol. Mexico. I. p. 139—140.) 

 Varela, R. 1915. Tecnica del lavado de las pseudo-plantas metalicas, 



de Traube. (Bol. Direcc. Est. biol. Mexico. I. p. 140-145. 2 f.) 

 Vries, H. de, 1916. Ueber die Abhängigkeit der Mutationskoeffizienten 



von äusseren Einflüssen. (Ber. deutsch bot. Ges. XXXIV. p 2 — 7.) 

 Willis, J. C. 1916. The evolution of species in Ceylon, with reference 



to the dying out of species. (Ann of Bot. XXX. p. 1—23. 2 f.) 



VI. Physiologie. 

 Cf. II. Heilbronn. 



Brenchley, W. E. 1916. The effect of the concentration of the nutrient 



Solution on the growth of barley and wheat in water cultures. 



(Ann. of Bot. XXX. p. 77-90. 1 pl. 4 d.) 

 Cook, F. C. 1916. Boron: its absorption and distribution in plants 



and its effect on growth. (Journ. agr. Res. V. p. 877—890.) 

 Damm, 0. 1916. Neues über die Wirkung des Radiumsauf die Pflanze. 



(Prometheus. XXVII. p. 344-347. 6 A.) 

 Eigenhart, 0. 1916. Die Kohlensäuredüngung. (Prometheus. XXVII. 



p. 353—356.) 

 Estreicher-Kiernowska, E. 1915. Ueber die Kälteresistenz und den 



Kältetod der Samen. (Freiburg [Schweiz]. 1915. 8^. 83 pp. 1 F.) 

 Fräser, M. T. 1916. Parallel tests of seeds by germination and bv 



electrical response. [P. E.]. (Ann. of Bot. XXX. p. 181 — 189.) 

 Holden, H. S. 1916. Further observations on the wound reactions of 



the petioles of Pteris aquiHna. (Ann. of Bot. XXX. p. 127— 133. 4 f.) 

 Hooker, Jr., H. D. 1916. Physiological observations on Drosera ro- 



tundifolia. (Bull. Torrey bot. Club. XLIII. p. 1—27. 11 f.) 

 Knight, R. C. 1916. On the use of the porometer in stomatal investi- 



gation. (Ann. of Bot. XXX. p. 57—76. 7 f.) 

 Laidlaw, C. G. P. and R. C. Knight. 1916. A description of a recording 



porometer and a note on stomatal behaviour during wilting. (Ann. 



of Bot. XXX. p. 47—56. 3 f.) 



