ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 61T 



zoospores. The best fixing solution was found to be Boveri's picro- 

 acetic acid. The methods of fixing, section-cutting, etc., are described. 



Cushman, J. A. — A Contribution to the Desmid Flora of New Hampshire. 



[An annotated list of GO North American species, with many varieties and 

 forms. Closterium intervalicola and Pleurotasnium srib-georgicum are new 

 species.] Rhodora, vii. (1905) pp. 111-19 (1 pi.). 



Kuckuck, P. — Der Strandwanderer. (The wanderer by the shore.) 



[A more or less popular account of the marine algae and animals found at the 

 seaside. The book is illustrated in colours and is intended for amateurs.] 



Munich: J. F. Lehmann, 1905, 76 pp. 24 pis 



Migula, W. — Kiyptogamen -Flora. (Cryptogamic Flora.) 

 [Algse, continued.] 



Thome's Flora von Deutschland (Gera : F. v. Zezschwitz, 1905) 



v. Lfg. 22, pp. 113-44 (5 pis.) 



Penard. E. — Encore la Chlamydomyxa. (More about Chlamydomyxa.) 



[Reply to criticisms.J Bull. Herb. Boissier, v. (1905) pp. 517-26. 



Richards, H. M. — Some Edible Seaweeds. 



[Abstract of an account of some 15 species employed chiefly by the Japanese 

 and Chinese.] Torreya, v. (1905) pp. 94-6. 



Suhr, J. — Die Algen des b'stlichen "Weserberglandes. (The alga? of the eastern 

 mountain district of the Weser.) 



[A continuation of this paper, containing an enumeration of 342 species of 

 diatoms with their habitats in the district.] 



Hedwigia, xliv. (1905) pp. 241-88. 



Fungi. 



(By A. Lorrain Smith, F.L.S.) 



Vegetable Pathology.* — Vittorio Peglion has had his attention 

 called to the decay of a field of lucerne in the valley of the Po. Examina- 

 tion showed the presence of small tubercles chiefly on the stalk at the 

 base of the lowest leaves. These were caused by a species of Chytri- 

 diaceaa, Urophlyctis alfalfa,, described by Magnus on lucerne plants from 

 Alsace. The tubercles were found to be full of the brown spores of the 

 fungus. Peglion did not follow the development of the fungus. 



Delacroixia coronata.j — I. Gallaud has taken advantage of the 

 saprophytic habit of this genus of Entomophthoreae to make a series of 

 artificial cultures. He has thus been able to follow its life-history in 

 detail. In a hanging drop culture he found that the spores germinated 

 freely and soon produced other spores at the end of a short filament. 

 When the culture was comparatively old a number of smaller spores 

 were formed, some of them being echinulate. All the spores had a clear 

 papilla. In certain conditions of humidity the spores formed spicules, 

 and these occasionally grew out and produced small spores at their 

 extremities. No oospores were found, and their absence, together with 

 the rapid drying up of the ordinary spores, probably accounts for the 

 rarity of Delacroixia. 



* Atti Reale Accad. Lincei, cccii. (1905) pp. 727-30 (1 fig.). 

 t Ann. Sci. Nat. Bot., i. ser. 9 (1905) pp. 101-33 (4 figs.). 



