Neue Litteratur. 99 



Davis, B. M. 1917. Some inter- and back-crosses of F 1 Oenothera 



hybrids. (Genetics. II. p. 155 — 185. ill.) 

 Dünn, L. C. 1917. Nucleus and cytoplasm as vehicles of heredity. 



(Amer. Nat. LI. p. 286-300.) 

 Emeison, R. Ä. 1917. Genetical studies of variegated pericarp in 



maize. (Genetics. II. p. 1 — 35. 4 f.) 

 Ernst, A. 1917. Experimentelle Erzeugung erblicher Parthenogenesis. 



[V. M.]. (Zschr. ind. Abst.- u. Vererb.-Lehre. XVII. p. 203—250.) 

 Frost, H. B. 1917. The different meanings of the term „factor" 



as affecting clearness in genetic discussion. (Amer. Nat. LI. p. 



244-250.) 

 Gates, R. R. 1917. Vegetative segregation in a hybrid race. (Journ 



of Genetics. VI. p. 237—253. ill.) 

 Gobi, C. 1916. Essai d'un Systeme phylogenetique du regne vegetal. 



(Petrograde, 1916. 8°. XIV, 63 pp. 5 tab. En Russe.) 

 Hagedoorn-La Brand, A. C. en A. L. Hagedoorn. 1917. Parthenogenese 



bij hoogere planten. (Te3^smannia. XXVII. p. 643 — 656. 1 pl.) 

 Halsted, B. D. 1917. Degenerate plants. (Journ. of Heredity. VIII. p. 



270—276. 2 f.) 

 Harris, J. A. 1917. Further studies on the relationship between bila- 

 teral asymmetry and fertility and fecundity in the unilocular 



fruit. (Genetics. IL p. 186—204. 1 f.) 

 Harris, J. A. 1917. On the applicability of Pearson's biserial r to the 



problem of asymmetry and fertility in the unilocular fruit. (Ge- 

 netics. II. p. 205—212. 1 f.) « 

 Harris, J. A. 1917. Supplementary determinations of the relationship 



between the number of ovules per pod and fertility in Phaseolus. 



(Genetics. II. p. 282-290. 2 f.) 

 Hayes, H. K. 1917. Inheritance of a mosaic pericarp pattern color of 



maize. (Genetics. II. p. 261—281.) 

 Ikeno, S. 1917. Studies on the hybrids of Capsicum annuum. Part 



II. On some variegated races. (Journ. of Genetics. VI. p. 201 — 229. ill.) 

 Jcnnings, H. S. 1916. Observed changes in hereditary characters in 



relation to evolution. (Journ. Washington Ac. Sc. VII. p. 281—301.) 

 Johannsen, W. 1917. Die Vererbungslehre bei Aristoteles und Hip- 



pokrates im Lichte heutiger Forschung. (Die Naturw. V. p. 



389—397. 1 F.) 

 Jones, D. F. 1917. Dominance of linked factors as a means of ac- 



counting for heterosis. (Proc. nation. Ac. Sc. U. S. A. III. p. 



310-312.) 

 Hempton, J. H. 1917. Protective coloration in seeds of Bolivian maize. 



(Journ. of Heredity. VIII. p. 200—202. 1 f.) 

 Koketsu, R. 1917. Serodiagnostische Untersuchungen an den Gym- 

 nospermen. [V. M.]. (Bot. Mag. Tokyo. XXXI. p. 144-153.) 

 Lotsy, J. P. 1917. Het verband tusschen onze opvatting omtrent het 



ontstaan der soorten en wetenschappelijke teelt. (Med. Ver. Be- 



vord. wet. Teelt. 1917. 7. 33 pp. 12 f. 2 pl.) 

 Lutz, A. M. 1917. Characters indicative of the number of somatic 



chromosomes present in Oenothera mutants and hybrids. (Amer. 



Nat. LI. p. 375-377.) 

 May, W. 1917. Ansichten über die Entstehung der Lebewesen. 



(Leipzig, 1917. 8°. 81 pp. Preis 90 Pf.) 

 Mendel, G. 1917. Versuche über Pflanzen-Hybriden. Anastatischer 



Neudruck. (Berlin 1917. 8°. 47 pp.) 

 Pring, G. H. 1917. Hybrid Nymphaeas. (Ann. Missouri bot. Gard. IV. 



p. 1 — 14. 5 f. 3 pl.) 



