118 Botanisches Centralblatt 



Lesage, P. 1912. Sur les limites de la germination des graines 



soumises ä l'action de Solutions diverses. (C. R. Ac. Sc. Paris. 



CLIV. p. 826-829.) 

 Leveille, H. 1912. L'action du zinc sur les plantes. (Bull. Geogr. 



bot. XXL p. 61.) 

 Livingston, B. E. 1912. The relation between climatic conditions 



and plant distribution in the United States, fjohns Hopkins Univ. 



Circ. 1912. p. 19—20.) 

 Livingston, B. E. 1912. The resistance offered by leaves to tran- 



spirational water loss. (Johns Hopkins Univ. Circ. 1912. p. 11 — 13.) 

 Livingston, B. E. and W. H. Brown. 1912. Relation of the daily 



march of transpiration to variations in water content of foliage 



leaves. (Johns Hopkins Univ. Circ. 1912. p. 21—23.) 

 Livingston, B. E. and A. H. Estabrook. 1912. Observations on 



the degree of stomatal movement in certain plants. (Johns Hopkins 



Univ. Circ. 1912. p. 24—25.) 



VII. Palaeontologie. 



Arber, E. A. N. 1912. Contributions to our Knowledge of the 



Floras of the Irish Carboniferous Rocks. Part I: Lower Carboni- 



ferous Flora of the Ballycastle Coalfield, Co. Antrim. (Proc. r. Soc. 



Dublin 1912. 15 pp. 3 pl.) 

 Arber, E. A. N. 1912. On the fossil flora of the forest of Dean 



Coalfield (Gloucestershire), and the relationships of the coalfields 



of the West of England and South Wales. (Philos. Trans, r. Soc. 



London B. CCII. p. 233—281. 3 pl. and abstract in: Proc. r. Soc. 



London B. LXXXIV. p. 543—545.) 

 Berry, E. W. 1912. American triassic Neocalamites. (Bot. Gaz. 



LIII. p. 174—180. 1 fig. 1 pl.) 

 Carpentier, A. 1912. Dicouverte d'un Psaronius ä structure con- 



servee dans le Westphalien inferieur du Nord de la France. (C. 



R. Ac. Sc. Paris. CLIV p. 671—673.) 

 Cockerell, T. A. D. 1912. Fossil fiowers and fruits. II. (Torreya. 



XII. p. 32—33. 1 fig.) 

 Crampton, C. B. 1912. The geological relations of stable and mi- 



gratory Plantformations. (Scottish bot. Rev. 1912. p. 1 — 16.) 

 Gothan, W. 1912. Ueber einige permo-carbonische Pflanzen von 



der unteren Tunguska [Siberien]. (Zschr. deutsch, geol. Ges. LXIII. 



p. 418-428. 1 Taf.) 



VIII. Microscopie. 



IX. Cryptogamen im Allgemeinen. 



(Vacant.) 



X. Altrae. 



Arnoldi, W. 1912. Algologische Studien. Zur Morphologie einiger 



Dasycladaceen [Bornetella, Acetabularia]. (Flora. CIV. p. 85—101. 



1 Taf. 16 Abb.) 

 Baker, S. M. 1912. On the brown seaweeds of the salt marsh. 



(Journ. Linn. Soc. London Bot. XL p. 275-291. 2 pl. 8 fig.) 

 Czapek, F. 1912. Ueber die Farbstoffe der Fukazeen [Fucaceae]. 



(Natw. Zschr. „Lotos" Prag. LIX. p. 250-251.) 

 Elenkin, A. A. 1912. Neue, seltenere oder interessante Arten und 



Formen der Algen in Mittel- Russland 1908— 1910 gesammelt. (Bull. 



Jard. imp. bot. St.-Petersbourg. XI. p. 162-170.) 



