Neue Litteratur. 163 



Britton, N. L. 1908. The taxonomic aspect of the species question. 



(Amer. Nat. XLII. p. 225—242.) 

 Clements, F. E. 1908. An ecologic view of the species conception. 



(Amer. Nat. XLII. p. 253—264.) 

 Cockerell, T. D. A. 1908. Variation in Helianthus. (Bot. Gaz. XLV. 



5. p. 338.) 

 Cowles, H. C. 1908. An ecological aspect of the conception of a 



species. (Amer. Nat. XLII. p. 265—271.) 

 Davenport, E. and H. L. Rietz. 1907. Type and Variability in 



Corn. (Bull. Illinois agric. Expt. Stat. 1907. 119. p. 1—26. (Statistical 



and mathematical studies on maize.) 

 East, E. M. 1908. Inbreeding in corn. (Rept. Connecticut agric. 



Expt Stat. 1908. p. 419—428. ill.) 

 East, E. M. 1908. Practical use of Mendelism in corn breeding. 



(Rept. Connecticut agric. Expt. Stat. 1908. p. 406—418. ill.) 

 East, E. M. 1908. Suggestions concerning certain bud variations. 



(Plant World. XL 4. p. 77—83.) 

 Erdner, E. 1908. Ein neuer Veilchen-Triperbastard. (Allg. bot. Zschr. 



XIV. 5. p. 72—73.) 

 France, R. H. 1907. Der heutige Stand der Mutationslehre. (Zschr. 



Ausbau Entw.-Lehre. I. 1/2. p. 53—59. 4 Fig. Forts, folgt.) 

 Gregory, R. P. 1908. On the inheritance of certain characters in 



Primula sinensis. (Rept. british Ass. Leicester. 1907. p. 691 — 693.) 

 Grimaldi, Cl. 1908. Sopra alcune esperienze di ibridazione della 



vite. (Atti r. Acc. Lincei Roma. XVII. 10. p. 653—661.) 

 Hurst, C. C. 1908. Mendel's Law of Heredity and its application to 



man. (Trans. Leicester lit. and phil. Soc. XII. 1. p. 35—48.) 

 Issler, E. 1907. Sorbus chamaemespilus und seine Bastarde mit 



Sorbus aria. (Mitt. philom. Ges. Elsas-Lothringen. III. p. 515 — 517.) 

 Mae Dougal, D. T., A. M. Vail and G. H. Shull. 1907. Mutations, 



variations and relationships of the Oenotheras. (Washington, Car- 

 negie Inst. 1907. 92 pp.) 

 Pauly, A. 1907. Die Anwendung des Zweckbegriffs auf die orga- 

 nischen Körper. (Zschr. Ausbau Entw.-Lehre. I. 1/2. p. 15 — 20. 



1 Fig.) 

 Rietz, H. L. 1907. Graphic representation of statistics. (Bull. Illinois 



agric. Expt. Stat. 1907. 119. p. 27—38. 3 figs.). [Application of gra- 



phic methods to the study of variability in maize.] 

 Zederbauer, E. 1907. Variationsrichtungen der Nadelhölzer. (Sitz- 



ber. kais. Ak. Wiss. Wien. 1. CXVI. 10. p. 1927-1963.) 



VI. Physiologie. 



Bastin, S. L. 1906. The marvels of plant retardation. (Amer. Hoines 

 and Gardens. III. 1. p. 44-46. 8 ill.) 



Behrens, J. 1908. Gärung ohne lebende Hefezellen. VI. [Sammel- 

 referat]. (Bot. Ztg. 2. LXVI. p. 193-204.) 



Bertrand, G. 1908. Recherches sur la melanogenese; action de la 

 tyrosinase sur la tyrosine. (Ann. Inst. Pasteur. XXII. 5. p. 381—389.) 



Bertrand, G. et M. Rosenblatt. 1908. Sur la facon dont la tyro- 

 sinase agit sur la tyrosine racemique. (Ann. Inst. Pasteur. XXII. 5. 

 p. 425—429.) 



Bialosuknia, W. 1908. Produkte der intramolekularen Atmung 

 bei sistiertem Leben der Fettsamen. (Jahrb. wiss. Bot. XLV. 4. 

 p. 644—660.) 



Bierberg, W. 1908. Die Bedeutung der Protoplasmarotation für 

 den Stofftransport in den Pflanzen. (Flora. IC. 1. p. 52—80.) 



