ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 221 



difficulty iu securing- nourishment. The successful growth of plants in 

 sterilized soil is not so much owing to the removal of organisms com- 

 peting for nourishment as to the heightened productiveness of the soil 

 due to sterilization. 



On infected humus, plants grow better than on sterilized, because 

 the mixing with natural humus introduces bacteria which accelerate the 

 " unlocking " of substances, mineral and others. On sterilized soil these 

 bacteria are absent. 



Culture experiments were made with Zea Mays, Lolium perenne, 

 Lepidium sativum, and Sinapis alba. The results tended to confirm 

 Stahl's view. 



Bloomfield, E. N.,& E. W. S want on— Sussex Fungi. Supplement. 



[About fifty species added from Roper's Annual Reports, 1873-80, and fifty 

 species newly observed.] 



Hastings and East Sussex Naturalist, i. pp. 300-3. 



BoRNMULLER, J. — Colleotioues StrausslansB novse. Weitere Beitrage zur Kennt- 

 nis der Flora West-Persiens (Strauss Collections. Contributions to the flora 

 of W. Persia.) 



[The lichens were collected in 1905-6. Notes are given on Steiner's original 

 list.] Beih. Bot. Centralhl., xxviii. (1911) pp. 523-9. 



Brenner, Widar — UntersuchuDgen fiber die SteckstofFernharung des Asper- 

 gillus niger und deren Verwertung. (Researches on the assimilation of 

 nitrogen and its value to Aspergillus niger.) 



Ber. Deutsch. Bot. Ges., xxix. (1911) pp. 479-83. 



Brookes, F. T.— Fungi of Cambridgeshire. 



[A list of fungi found in the countv.] 



Proc. Cambr. Phil. Soc.,xvi. (1911) pp. 276-9. 



DuMEE, Paul — Nouvel atlas de poche des Champignons comestibles et vene- 

 neux. (New pocket-atlas of edible and poisonous fungi.) 



Paris : L. Lhomme, 1911. 

 „ ,, Essai sur le genre Lepiota. (Study of the genus Le^ioto.) 



Amateur de Champignons, v. 1 (5911) 40 pp. (8 pis.). 



See also Bull. Soc. My col. France, xxvii. 



(1911) pp. 515-16. 



Grove, W. B.— New or Noteworthy Fungi. Part IV. 

 [Notes and descriptions of about thirty species.] 



Journ. Bot., 1. (1912) pp. 9-8 and 44-55 (2 pis.), 



Magnus, P.— Zur Pilzflora Syriens. (The fungus-flora of Syria.) 



[Mostly Ustilaginese and Uredinese; several new species were found.] 



Mitt. Thiir. Bot. Ver. U.F., xxxviii. (1911) pp. 63-75 (1 pi.). 

 See also Bot. Centralhl., cxvii. (1911) p. 592. 



Mai RE, Rene — Notes critiques sur quelques champignons recoltes a Grenoble- 

 Annecy. (Critical notes on some fungi collected at Grenoble-Annecy.) 



Btill. Soc. Mycol. France, xxvii. (1911) pp 403-52 (4 pis. and 7 figs.). 

 M AS s E E, G.— Fungi Exotici. XII. 



[A number of new species are described from Malacca, Uganda, Natal, etc.] 

 Bull. Misc. Inform. Roy. Bot. Gard. Kew (1911) pp. 223-6 (1 pi.). 

 Mind EN, V. — Pilze. 



[The fungi of the Brandenburg flora. The recent two fascicles finish the 

 Chytridinese and continue with Monoblepharidinese and Saprolegnineae.] 



Krypt. -Flora Mark Brandenburg, v., pp. 353-608 Cfigs.). 



MtJLLER, P. — Untersuchungen fiber die chemotaktische Eeizbarkeit der Zoosporen 

 von Chytridiaceen und Saprolegniaceen. (Researches on the chemotactic sensi- 

 bility of the zoospores of Chvtridiaceffi and Saprolegniacese.) 



Jahrh. Wiss. Bot., iv. (1911) pp. 421-521. 

 See also Bot. Centralhl., cxvii. (1911) pp. 628-9. 



