48 EXPERIMENT STATION RECORD. 



isliition (iiiaraiitininij the United States against the introduction of this and 

 similar troubles. 



A bibliography of the disease is given. 



The late blight in tomatoes, D. McAlpine (Jour. Dcpt. Agr. Victoria, 8 

 19 1 U), No. 1, pp. JfS, Jit), figs. 2). — ^iVttention is called to the fact that the late 

 blight of potatoes {Phi/topliihora infcstans) was found infesting tomato plants 

 in New Zealand. The disease generally attacks tomatoes similarly to potatoes, 

 first appearing on the leaves, then on the stems, and finally causing the fruit 

 to rot. Cross inoculation experiments on both tomatoes and potatoes proved 

 the identity of the fungus. 



A monograph of the Phrag'midia on the genus Rubus, J. Vi.eugel (Svensk 

 Bof. Tid.skr., 2 (I DOS), No. 2, op. 123- tSS, pi. 1, figs. /,). — A summary is given 

 of the Phragmidia hitherto described for the genus Rubus, followed by a key 

 to 8 species and varieties figured and described, together with a complete host 

 index for each species noted. 



The author describes as new P. saxatile and P. ruM candicanfium. 



The morphological and anatomical characters of roncet of the American 

 grape in Sicily, E. Pantanelli (Atti R. Accad. Lined, Rend. CI. Sci. Fis., Mat. 

 e Nat., 5. ser., 19 {1910), I, No. 3, pp. Ufl-lbJ), figs. 2). — Following a review of 

 the literature on roncet and diseases that are often confounded with it, the 

 author gives a detailed description and discussion of the constant and variable 

 characteristics of the disease, both morphological and anatomical, especially as 

 found on certain varieties of grapes. 



A sun scald of the grape, P. Pacottet {Rev. Vit., 32 (1909), No. 813, pp. 

 57-60, figs. Ji). — ^Attention is called to a disease prevalent in France, Algeria, 

 Spain, Chile, and Argentina, due to a scalding of the skins of the grape berries 

 from intense sunlight after several cool, cloudy days. The pulp of the berries 

 in the scalded areas contracts and pulls away from the skin and the fruit 

 finally rots from the subsequent invasion of fungi and Ijacteria. The disease 

 usually appears at the period when the seeds are beginning to harden and is 

 more severe on the white varieties and muscats than on other kinds, and 

 on grapes grown in greenhouses than on those grown in the open. 



Judicious pruning and destruction of the infected berries as they appear are 

 recommended in the open vineyard, and, in addition to this, whitewashing the 

 glass to modify the intensity of the sun's rays for those grown in greenhouses. 



The conditions of sclerotia and sclerotia ring formation of Botrytis 

 cinerea in artificial cultures, W. Reidemeister (Ann. jMijeoL, 7 (1909), No. 1, 

 pp. 19-Ji.'i, figs. 3). — The various conditions under which the fungus would form 

 its sclerotia were determined by cultural experiments, these including tests 

 as to the influence of the composition of the culture media, the quantity of the 

 culture, the reaction (acid or alkaline) of the media, osmotic pressure, trans- 

 piration, etc. 



The paper closes with a brief summary of the formation, size, number, and 

 character of the sclerotia developed under these various conditions, and a dis- 

 cussion of the formation of conidia and appressoria and of correlation between 

 sclerotia and conidia and between appressoria and conidia. 



The development of some Ascomycetes, A. Potebnia (Ahs. in Bot. CentU., 

 Ill (1909), No. 7, pp. 163, /6'.'/).— This is an elaborate taxonomic treatment of 

 the 4 genera, Mycosphterella. Gnomonia, Glomerella, and Pseudopeziza. 



Fire blight in fruit trees, W. B. Mack (Nevada Stu. Bui. 66, pp. 62-6^, pis. 

 2).— The results of a bacteriological study of the fire blight in fruit trees are 

 given in which the organism was separated, cultivated on media, and inocu- 

 lation experiments by means of punctures made on different parts of the apple 

 tree. As a result of the inoculations the characteristic symptoms of the disease 



