228 SUMMARY OF CURRENT RESEARCHES RELATING TO 



given for variations dne to environment, etc., when diagnosing moulds. 

 He found that their form, size, etc., varied considerably according to 

 the medium in which they grew, and also according to the temperature. 

 The ornamentation of the spores was liable also to great transformation ; 

 with a rising temperature the markings or spines tended to disappear. 

 The author gives comparative figures ;of the spores of different species, 

 which serve to accentuate the importance of his statements. 



Pathogenic Aspergillus.* — G. Bainier and A. Sartory describe a 

 new form of Aspergillus closely allied to A. famigatus, but differing in 

 aspect and colour and in various other respects. It was pathogenic for 

 certain animals (hares, etc.) which died in six days after the fungus had 

 been injected. Details are given of the effects on the animals. 



Vegetable Pathology /j" — Vittorio Peglion has studied the dissemina- 

 tion of the disease of cereals caused by Sclerospora. He finds that this 

 is achieved by the presence of the mycelium of the fungus under the 

 outer coating of the seed. He sowed seeds taken from a diseased head 

 without having treated them in any way. A number of the seeds 

 never germinated : those that grew presented abnormal characters, and 

 microscopic examination proved the presence of mycelium in the 

 younger parts of the plants. 



Plant Diseases. — E. G. Roquesf describes three parasitic fungi 

 which he found on plants in the Pyrenees : Fusicladium Aro/iici formed 

 brown spots on the under side of leaves of Aronieum scorpioides ; 

 Sgnchgtrium aureum was signalled on four new hosts : Hutchinsia 

 alpina, Galium csespitosum, Oxytropis pyrenaica, and Phgteuma spicatum. 

 Pyrenophora chrysospora was found in great abundance on the leaves 

 of Saxifraga aizoides. It is the same fungus as that reported from 

 Spitzbergen by Karsten, probably dating from the time of the glaciers, 

 and is thus a Pyrenean mycological record of Pleistocene ages. 



C. Spegazzini§ contributes an account of pests of cherry trees in 

 Argentina. He describes three new species of fungi on the leaves. 



Ch. Bernard || supplied notes on vegetable pathology in the East 

 Indies, and describes pests of Citrus, Tea, Vanilla, etc. A number of 

 new species of parasitic fungi are described. 



A further paper % by the same writer deals with the pests of plants, 

 Hevea, Ficus, Gastelloa, Kicksia, and Manihot, from which rubber is 

 obtained. One of the most deadly is Oorticium javanicum on the roots 

 of Hevea. 



Bokorny, Th. — Einiges iiber die Atmung der Hefe unter verschiedenen Be- 

 dingungen. (On the respiration of yeast in different circumstances.) 



Allg. Brauer-Hopfcnzeit (Aug. 1908). 

 See also Centralbl. Bakt., xxi'i. (1908) pp. 122-3. 



* C.B. Soc. Biol. Paris, lxvi. (1909) pp. 22-3. 



t Atti Reale Accad. Lincei, cccv. (1908) pp. 509-11. 



t Bull. Soc. Bot. France, liv. (1907) pp. 141-6. 



§ Cron. Agric., ii. (1908) pp. 33-40 (5 figs.). See also Ann. Mycol., vi. (1908) 

 p. 500. 



|| Bull. Dep. Agric. Indes. Neerl., xi. (1907) 55 pp. (3 pis.). See also Ann. 

 Mycol., vi. (1908) p. 500. 



H Op. cit.,xii. (1907) 79 pp. (2 pis.). See also Ann. Mycol. vi. (1908) p. 500. 



