rLORlHA AND CaLITORNIA LaMORATORII-S 243 



bean anthracnosc, beet downy mildew, cherry leaf-blii^ht, currant 

 septoria, ^rape black rot, grape downy mildew, mignonette leaf- 

 blight, pear leaf-blight, pear scab, plum leaf-blight, plum leaf 

 rust, potato blight or rot, c]uince leaf spot or blight, raspberry 

 anthracnose, and strawberry leaf-blight. 



In this list appeared also potato leaf-blight or Macrosporium 

 disease. On October 10, 1892, Galloway had written to Pammel, 



We have obtained excellent results in the treatment of the potato macro- 

 sporium. Our crop has just been harvested and the results arc very striking. 

 The yield of the treated would have been much greater if the tops had not 

 been cut down by frpst. On Oct[ober] 3rd we had the temperature down 

 to 26° F. and of course everything was frozen. Tlie untreated tops at the 

 time of the frost were completely dead. I have been growing the Macro- 

 sporium for three or four months in various culture media and have 

 obtained some interesting facts in this way. 



Before the fourteenth annual meeting, also held at Madison in 

 1893, of the Society for the Promotion of Agricultural Science, 

 Galloway presented a paper on " The Macrosporium potato dis- 

 ease," -" which he had been studying, along with other potato 

 diseases, for, perhaps, eight years. At this meeting Smith, Pammel, 

 Jones, Goff, Bolley, Chester, and one or two others, were made 

 members of the Society. Each had promoted agricultural science, 

 and their work entirely or in part had been in plant pathology. 



Pammel had been doing some especially important work. In 

 July 1891, Galloway had received from him a report of the Iowa 

 Agricultural Experiment Station on fungous diseases of plants 

 and told him that he was glad that Pammel was making mycology 

 such a prominent part of his botanical work. March 10, 1892, 

 Journal of Mycology -^ had published a paper by Pammel on 

 " New Fungous Diseases of Iowa " which divided the subject 

 according to forage plants and cereals, fruits and fruit trees, and 

 forest trees. Regarded as especially valuable were Pammel's 

 studies of root diseases. The life histories of Peziza sclerotiorum, 

 Rhizoctonia hetcie, and Cercospora het'icola were being traced by 

 him in 1892,-° along with some fungicidal experimental work, 

 some experiments in seed germination and crossing of cucurbits, 



-' Proceedings of the Society, 46-58, 1893. 



=="7(2): 95-103. 



^" George F. Atkinson, Botany at the experiment stations, Science, op. cit., 329. 



