ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 629' 



authors publish a general account of the plants, and instructions how to 

 gather and examine them. Then follow tables of the families, tribes, 

 and genera into which they are divided. Under each genus one or two 

 species are carefully described, sufficiently so to enable the student to 

 identify the Lichen, especially when aided by the dried specimens. 



Bouly de Lesdain. — Liste des Lichens recueillis a Spa. (List of Lichens 

 collected at Spa.) 



[The list includes 188 species of Lichens. Two new species of Lecidea are 

 described.] Bull. Soc. Bot. France, lii. (1905) 23 pp. 



See also Bot. Centralbl., xcix. (1905) pp. 33-4. 



Cheel, E. — Bibliography of Australian Lichens. 



[A complete list of papers on this subject published prior to 

 September 1903.] 

 Journ. and Proc. Boy. Soc. N. S. Wales, xxxvii. (1903) pp. 172-82. 



,, „ List of Lichens found in New South Wales. 



[The list is additional to those recorded in F. R. M. Wilson's list.] 



Proc. Linn. Soc. N.S.W. (1903) pp. 687-90. 



Cuffino, Luigi. — Osservazione e aggiunte alia Flora del Canada. (Observation* 

 and additions to the Flora of Canada.) 



[A small number of Lichens are included in the list, collected in British 

 Columbia.] Malpighia, xix. (1905) p. 196. 



Duss, R. T. — Les principaux Lichens de la Guadeloupe. (The principal Lichens 

 of Guadeloupe.) 



[The plants were collected by R. T. Duss and determined by Wainio. The 

 abundance of species of Graphis is noted.] 



See Bot. Centralbl., xcviii. (1905) p. 657. 



Jatta, A. — Licheni essotici dell' Erbario Levier recolti nelT Asia meridionale, nell' 



Oceania, nel Brasile, e nel Madagascar. Serie ii. (Exotic Lichens from the 



Levier Herbarium, collected in Southern Asia, Oceania, Brazil and Madagascar.) 



[One hundred and fifty species are recorded ; there are several new species 



and varieties.] Malpighia, xix. (1905) pp. 163-86. 



Wainio, Ed v. A. — Lichenes ab Ove Paulsen praecipue in provincia Ferghana (Asia 

 Media) et a Boris Fedtschenko in Tjanschen anno 1898-1899 collecti. (Lichens- 

 from Central Asia.) 



[Thirty-eight species are recorded ; several of these are new.] 



Bot. Tidsslcr. xxvi.. Heft 2 (Copenhagen, 1904) pp. 241-50. 

 See also Bot. Centralbl, xcviii. (1905) p. 603. 



Scb.izoph.yta. 

 Schizomycetes. 



New Colourless Thiospirillum.* — W. Omelianski describes this 

 organism, to which he gives the name of Thiospirillum Winogradsky . 

 It developed in a tall cylinder in which, beneath a layer of fluidity, was 

 lime mud mixed with gypsum and a small quantity of vegetable refuse ; 

 the cylinder was filled to the brim with tap water, and stood in a shady 

 place. After several months a zone of the sulphur bacterium appeared 

 in the lower third of the vessel. It is a large, faintly brownish-green 

 coloured spirillum, with active screw-like motility ; its colour depends 

 on the highly refractile drops of sulphur with which the body is dis- 



* Centralbl. Bakt., 2 te Abt., xiv. (1905) p. 769. 



