714 SUMMARY OF CUKKENT RESEARCHES RELATING TO 



His object is to supply gardeners with a handy text-book of the fungi 

 that attack garden plants. He gives in the first chapters an account of 

 the growth and development of the various parasitic fungi ; instructions 

 how to examine them microscopically ; how to make cultures of them in 

 damp chambers ; and finally, how to combat the diseases due to the 

 fungi. In the remaining part he takes up the different classes of garden 

 products, vegetables, shrubs, annuals, and hot-house plants, and for each 

 plant he records the fungi that have been known to infest it, with a 

 short account of them. There are also provided an index of the host- 

 plants and an index of the fungi dealt with in the text. 



The Board of Agriculture has issued a leaflet * on the American 

 gooseberry mildew, describing with pen and pencil the serious nature of 

 the disease, and advising growers as to the best methods of treatment. 



An account is also published f by the Board of Agriculture of a 

 disease of pines due to the fungus Diplodia pinea. This is confined to 

 the terminal shoots, and is recognised l)y the yellowing and subsequent 

 shedding of the leaves. The fungus is a wound parasite, and the injury 

 spreads about 2 in. in the tissues from the place of infection. 



F. L. Stevens and J. G. Hall| describe a black rot of apples 

 characterised by rotten black spots on the fruits. It is due to a hypho- 

 mycetous fungus Voluiella frucU sp. n. The mycelium is black in the 

 presence of carbohydrates ; the conidia are colourless. Tiie fungus 

 only gains entrance by some cut or bruise. 



A. Osterwalder§ described some time ago the fungi that were 

 commonly found attacking stored fruit. A careful elimination of all 

 the fruits that were infected by 3Ionilia and PenicilUum, has seemingly 

 left a clear field for other forms, and a new species, Glceosjwrium album, 

 was found living on stored apples. The author points out wherein it 

 differs from G.frucUgenum. He also describes another species of the 

 same genus that grew on the berries of a Solanum, and which he names 

 G. Solani. The berries only wei'e attacked. 



Wilhelm Herter || contributes further information about the goose- 

 berry mildew. He chronicles a number of new localities for the disease, 

 several of them in England, in Worcestershire and Gloucestershire. 

 The fungus has also been found in Kent on Rlhes aureum. A list is 

 given of new papers on this subject. 



G. D'lppolitolT records a series of observations on the destruction of 

 maize plants by the fungus Schro.ywra macrospora. The leaves were 

 destroyed, and flowering completely hindered both on male and female 

 heads. The mycelium and oospores of the fungus were found in the 

 damaged stalks. 



Franz Boden** has published an account of the stem disease of pines, 



* Board of Agric. and Fisheries, Leaflet No. 195 (1907) 5 pp., 1 pi., 2 figs, 

 t Journ. Board Agric., xiv. (1907) pp. 164-6. 



I Journ. Mycol., xiii. (1907) pp. 94-9 (1 pi.). 



§ Centralbl. Bakt., xviii. (1907) pp. 825-7 (5 figs.). 



II Tom. cit., pp. 828-30 (map). 



f Staz. Sper. Agrar., xxxviii. p. 998. See also Centralbl. Bakt., xviii. (1907) 

 p. 700. 



** Die Stockfaule der Fichte, ihre Entstehung und Verhiitung. Hameln: 

 Heinrieh Keese, 1906, 86 pp., 18 autotypes and figs.). See also Centralbl. Bakt., 

 xviii. (1907) p. 703. 



