650 EXPERIMENT STATION RECORD. 



some Iciiirtli. and following; a system of classitication it is referred to Ascf>h(ir- 

 tcriit))! liifciiiii. 



Vvom the descriptions of several bacterial diseases of olives, oleanders, etc., 

 and parallel cultures of the organisms causing them, the author is led to believe 

 that they are all due to the species of bacterium mentioned above. 



A disease of coffee in Peru, L. Hecq (Bol. Min. Fomeiito IPcrii], J, (1906), 

 Ao. !), PI). ,i()-.V.i. /lis. J. ////. /). — An account is given of a disease of coffee due 

 to StUhrlla puriiUi. This fungus is said to be causing considerable injury in 

 the coffee plantations of Peru, and suggestions are given for its prevention. 

 These include the destruction of infected plants, spraying with Bordeaux mix- 

 ture, clean cultivation, etc. 



A disease of hazelnuts, H. C. Schellenberg {Bcr. Deiif. Bot. Gcsell. 24 

 (lyOd), \n. D. pp- ')II5-511. pi. 1). — A description is given of a disease of the 

 hazelnut in which the male catkins are attacked by a species of Sclerotinia. 

 The effect produced upon the host plant is described and comparisons made 

 with the disease caused by Ciboria boJaris. The author claims that the fungi 

 are quite distinct, and as the one causing the disease in question has not been 

 technically characterized, he proi)Oses the name Sclrrotinia conjli n. sp. for it. 



A fungus disease of the cherry laurel, E. S. Salaion (Join: Roii. Ilort. S!oc. 

 [LoihUjii], 31 (inOG). pp. l-'i.i-l.',6. fig. 1). — An account of the attack of the rose 

 mildew (SpharotJicca paiiiiosu) on the cherry laurel. This fungus, which is 

 common on species of the genus Rosa, is said to occur only sparingly on other 

 plants, but has been reported as attacking the peach, apricot, almond, and 

 cherry laurel. Spraying with potassium sulphid or the application of flowers 

 of sulphur is recommended for combating the disease. 



A disease of fir, L. Mangin and P. Hariot {Compt. Rend. Acad. Sci. [Paris]^ 

 l-'/S (l!)(i()), No. 22, pp. 840-842). — The attention of the authors was called 

 during the summer of 1906 to a pronounced reddening of the leaves on a num- 

 ber of fir trees in the Jura region. The leaves had assumed a bright orange 

 red color, which was in marked contrast with the dark green of the other 

 foliage. The diseased leaves seemed to be more or less altered and in some cases 

 the trees were badly affected. 



An examination of the leaves showed the presence of a number of fungi, 

 among them Rhisosphara ahictis n. g., Maciophonia abietis n. sp., Cijtospora 

 pinastri, and Mcnoidea ahlctis n. g. These different fungi which seem to be more 

 or less associated with the disease are technically described and their probable 

 relationships pointed out. 



It is hoped by experimental studies to demonstrate the true cause of the dis- 

 ease, and inoculation experiments have already been begun with that end in 

 view. 



On the parasitism of Merulius lacrymans, O. Appel (Arb. K. Biol. An.it. 

 Land ii. Foist ir.. ■'> (IDod), A o. .'/. pp. 2i)4-20t;. fi</K. 2). — A brief account is given 

 of experiments l)y which the author sought to infect young seedlings of fir and 

 pine with the dry rot fungus Mrrnliu>< lacrynian.^. 



The young trees were placed in pots, severe wounds made in the stems, and 

 the mycelium of the fungus introduced, after which the i)lants were kept for 

 several weeks in the moist atmosphere of the greenhouse. While the fungus 

 gi'ew abundantly, there does not appear to be any evidence that the dry rot 

 fungus is able to live parasitically on young living coniferous trees. 



A strangling disease of young birches, R. Laubert (Arb. K. Biol. Anst. 

 Land ii. Forstir.. .> (IDOH). No. '/. pp. 206-212. fififi. 5). — In the summer of 1905 

 attention was called to a great number of dead and dying birch seedlings. 

 This led to an investigation of the cause of the trouble, and the authoi' sep- 



