Neue Litteratur. 179 



Mager, H. 1913. Versuche über die Metakutisierung. (Flora . CVI. p. 

 42—50. 4 A.) 



Magnus, W. 1913. Ueber zellenförmige Selbstdifferenzierung aus flüs- 

 siger Materie. (Ber. deutsch, bot. Ges. XXXI. p. 290—304. 1 T.) 



V. Varietäten, Descendenz, Hybriden, 



Cf. VI. Engler. 



Collins, G. N. 1913. Heredity of a Maize Variation. (Bull. Dep. Agr. 



Washington. 1913. 23 pp. 1 pl. 1 f.) 

 Collins, G. N. 1913. Variety of Maize with Silks maturing before the 



Tasseis. (Cifc. Dep. Agr. Washington. 1913. 11 pp. 3 f.) 

 Correns, C. 1913. Selbststerilität und individualstoffe. Biol. Cbl. XXXIII. 



p. 389—423.) 

 Daniel, L. e J. Delpon. 1913. Sur un hybride de greffe entre pecher 



et amandier. (C. R. Ac. Sc. Paris. CLVI. p. 2000-2002.) 

 Delage, Y. and M. Goldsmith. 1913. The Theories of Evolution. (Lon- 

 don 1913. 8°. 352 pp. 

 Emerson, R. A. 1913. The possible origin of mutations in somatic 



cells. (Amer. Nat. XLVII. p. 375—377.) 

 Emerson, R. A. and E. M. East. 1913. The inheritance of quantitative 



characters in maize. (Bull. agr. Exp. Stat. Nebraska. 191.3. 2. 



120 pp. ill.) 

 Fleischmann, H. 1913. Ein neuer Cirsium-Bastard. (Aus dem nachge- 

 lassenen Herbare Mich. Ferd. Müllners). (Ann. k. k. nath. Hofmus. 



Wien. XXVII. p. 149-151. 2 T.) 

 Gard, M. 1913. Les elements sexuels des hybrides de vigne. (C. R. 



Ac. Sc. Paris. CLVII. p. 226—228.) 

 Glück. H. 1913. Gattungs-Bastarde innerhalb der Familie der Alisma- 



ceen. (Beih. bot. Cbl. 2. XXX. p. 124 137. 2 T. 24 A.) 

 Harris. J. A. 1913. The relationship between the weight of the seed 



planted and the characteristics of the plant produced. (Biometrika. 



IX. p. 11 — 21.) 

 Hobhouse, L T. 1913. Development and Purpose. Essay towards a 



Philosophy of Evolution. (London 1913. 8 U . 416 pp.) 

 Holdefleiss, P. 1913. Ueber Züchtung- und Vererbungsfragen bei 



Rotklee. (Kühn Arch. 1913 p. 81 — 115.) 

 Jennings, H. S. 1913. Doctrines held as vitalism. (Amer. Nat. XLVII. 



p. 385-417.) 

 Lang, H. 1913. Messungen an Tabakblättern. (Zschr. f. Pflanzenzucht. 



I. p. 287—300. 2 A.) 

 Vuillemin, P. 1912. La periodicite des caracteres specifiques. (Bull. 



Soc. Sc. Nancy. 3. XIII. p. 179—218. 13 f.) 



VI. Physiologie. 

 Cf. XIX. Dezani. 



Angelico, F. e G. Catalano. 1912. Sulla presenza della formaldeide nei 



succhi delle piante verdi. Boll. r. Orto bot. e Giard. col. Palermo. 



XI. p. 75-80.; 

 Baker, S. M. 1913. Quantitative experiments on the effect of formal- 



dehyde on living plants. (Ann. of Bot. XXVII. p. 411— 442. 2 pl. 4 f.) 

 Carruthers, W. 1911. On the vitality of farm seeds. (Journ. r. agr. 



Soc. XLII. p. 168-183.) 

 Ghouchak, D. 1913. Sur l'absorption de differentes formes d'azote par 



les plantes; influence du milieu. (C. R. Ac. Sc. Paris. CLVI. p. 



1784-1787.) 

 Cicerone, D. e G. Marocchi. 1913. Come varia la quantitä di nicotina 



