ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 627 



New Plasmodiophora.* — M. Molliard found specimens of Triglochin 

 palustre affected with galls on their stalks, of a white colour, somewhat 

 resembling the tumours produced by Cystopus candidus. Examination 

 proved the organisms causing the gall to be a species of Plasmodiophoreae, 

 belonging to the genus Tetramyxa. The host-plants grew in marshy 

 soil, and infection from the zoospores evidently took place when the stalks 

 were quite young. Stalks and flower were much deformed by the action 

 of the parasite. 



Insect Parasite.! — Louis Leger describes a " mycetozoaire," Pelto- 

 myces hyalinus g. et sp. n., which he found in the Malpighian tubes of 

 beetles. He describes the vegetative condition — first a small globose 

 nucleated mass, which increases, giving rise to a plasmodium followed by 

 the spore-forming stage, in which he traces distinct sexuality — the forma- 

 tion and subsequent fusion of different kinds of nuclei. The ripe spores 

 are evacuated from the body of the insect with the excreta. The author 

 places the genus near to Plasmodiophora. 



Re a, Cable ton — Botany of Worcestershire. 

 [List of Mvcetozoa found in the county.] 



Birmingham : Cornish Brothers, 1909, p. 626-30. 



Jaczewski, A. A. — Mykologische Flora des europaischen und asiatischen Buss- 

 lands II. Myxomycetae. (Mycological flora of European and Asiatic Russia. 

 II. Myxornycetes.) 



Materialen zur Kenntn. Faun. u. Fl. Euss. EeicJws, Bot. TeiL, 



fasc. vi. (Moscow, 1907) pp. 1-140 (84 figs.). 



See also Bot. Centralbl., cxi. (1909) pp. 105- 6. 



Schizophy ta. 

 Schizomycetes. 



Garget in Cows.i — W. Gr. Savage finds that mastitis or garget in 

 cows is due either to Streptococcus, Staphylococcus, or Bacillus coli, but 

 chiefly to a streptococcus of a definite type — spoken of as Streptococcus 

 mastidis. The characters of this type are long twisted chains staining 

 by Gram's method, producing acid in milk and clot within three days at 

 37° C. ; acid is produced in lactose and in saccharose media, but never 

 in mannite, and not usually in salicin, raffinose, or inulin ; they are non- 

 pathogenic for mice on subcutaneous injection ; they grow rapidly but 

 readily die out in ordinary broth. Infection probably arises by an 

 upward invasion of the udder through the teats. 



Bacteria of Sewer Air.§ — F. W. Andrewes, by exposing plates of 

 McConkey's bile salt lactose neutral red agar media to the air of sewers, 

 found that sewage bacteria may be readily demonstrated, especially in 

 manholes over main drains, and that the determining cause of the 

 presence of sewage bacteria in the drain air is droplet contamination 

 from splashing. The number of sewage bacteria in drain air is in- 

 fluenced bv the volume of the sewage flow. The number of lactose 



* Bull. Soc. Bot. France, ix. (1909) pp. 23-5. 



t Comptes Rendus, cxlix. (1909) pp. 239-41. 



1 Rep. Local Govt. Board, 1907-8, p. 359. § Tom- cit., p. 266. 



