350 EXPEEIMENT STATION EECORD. 



time it is not uncommon to find the liost nuclei lying free between tlie hyphae 

 of the fungus. 



The perfect stage of the fungus of raspberry anthracnose, W. H. Buek- 

 HOLDEB {AJ}S. in Phytopathology, Jf (1914), No. 6, p. 401). — During 1914 the 

 author made an examination of the affected stems which showed minute pustules 

 on the diseased area. From these were developed cultures the same as those 

 from conidia of the anthracnose fungus {Glceosporiiun venctam). The mor- 

 phology of the fungus on raspberries seems to be identical with that found by 

 Woronichin upon Pyrus, which is attributed to Plectodiscella piri. 



[Fungus diseases of cranberries], H. J. Feanklin (Massachusetts Sta. Bui. 

 160 {1915), pp. 94-100). — ^A report is given of Investigations carried on in 

 cooperation with C. L. Shear, of the Bureau of Plant Industry of this Depart- 

 ment, the general plan being the same as that previously desci'ibed (E. S. R., 

 31, p. 740). 



Experiments for the control of diseases by spraying with Bordeaux mixture 

 have been continued, but no evidence was obtained to indicate that spraying is 

 beneficial, and under some conditions it was apparently injurious to the crop. 

 Indifferent results were obtained in an attempt to determine whether the keep- 

 ing qualities of the fruit in a sprayed plat were better than those where the 

 plants were not sprayed. The use of copi:)er sulphate placed in flowage water was 

 again tested without definite results. The berries from the treated sections, 

 however, showed a' smaller perceuti\ge of loss in storage than the untreated ones. 



The effect of spraying on root development of cranberry plants was studied, 

 and the results obtained seemed to suggest that the plants are injured by retard- 

 ing the development of new rootlets. In order to determine definitely the effect 

 of Bordeaux mixture a series of plats were sprayed in various ways, excessive 

 quantities of the fungicide being employed. It seems that spraying for the 

 control of fungus diseases in the Cape Cod bogs is impracticable unless some 

 noninjuridus substitute for Bordeaux mixture can be found. 



Notes are given on the disease commonly called ringworm, which, instead of 

 being the result of insect work, seems to be due to the attack of fungi. The 

 author also reports the occurrence of the Wisconsin false blossom disease 

 (E. S. R., 31, p. 841) in bogs in Massachusetts. In every instance the presence 

 of the disease was traced to vines that had come from Wisconsin. 



Rhizoctonia in America, G. L. Peltier (Abs. in Phytopathology, 4 (1914), 

 No. 6, p. 406). — While making a study of the stem rot of carnation, due to 

 Rhizoctonia, the author collected about 50 forms of the fungus. 



After three seasons' work with these cultures he finds that while some exhibit 

 slight morphological differences, in cross-inoculation experiments they all behave 

 alike. All but two of the forms, he claims, can be included under R. solani. 

 The author states that true R. violacea of Europe has not been reported in 

 this country. There seems to be no question that Hypochmis solani of Europe 

 is the same as Corticium vagum solani. 



An anthracnose of Asclepias speciosa caused by a new species of Colleto- 

 trichum, P. J. O'Gara (Abs. in Phytopathology, 4 (1914), No. 6, p. 410) —A 

 brief account is given of a disease of stems and foliage of the common milk- 

 weed in the Salt Lake Valley. A technical description of the fungus has been 

 given elsewhere (E. S. R., .32, ]). S42). 



Some effects on chestnut trees of the injection of chemicals, Caroline 

 RuMBOLD (Abs. in Phytopathology, 4 (1914), No. 6, p. 412). — The author injected 

 a number of stains into living chestnut trees to determine their diffusion 

 throughout the tree. When injected into the trunks the solutions were found 

 to have passed up and down iu restricted areas. Branches and roots on the 



