FURTHCR Rl-Sl-ARCHIIS IN DiSI-ASES OF PLANTS 567 



return to \\'ashint;toii. At Lansini; he examined " Ray Nelson's 

 photos of Trypanosomes in pliK)cni of Bean mosaic, Tomato 

 mosaic. Clover mosaic and Potato leaf curl. ... It is a great dis- 

 covery," he wrote in his diary, " and Nelson or someone will be 

 able to complete the proof of pathogenesis, beyond a doubt." As 

 it happened, when he arrived in Washington, he learned at the 

 Department of Agriculture that Dr. Jones was in the city. The 

 next evening he and Dr. R. A. Harper called on Dr. and Mrs. 

 Smith at their home. They "' discussed Academy matters and other 

 things." A few days later. Dr. Smith and Dr. Jones " drew up a 

 preliminary reports on Nomenclature of bacteria for the Boston 

 meeting of the Phytopathologists. I," Smith wrote in his diary, 

 " am the chairman of a committee they appointed for that purpose 

 last year." Later that day. Dr. H. H. Bartlett and he spent an hour 

 together in his laboratory. Recently Bartlett had been appointed 

 head of the department of botany at the University of Michigan. 

 The fourteenth meeting of the American Phytopathological 

 Society was held in the main building of the Massachusetts 

 Institute of Technology at Cambridge. President E. C. Stakman 

 presided, and seventy-five papers were read. On December 27 

 Smith listened to a paper by Melville T. Cook on galls, and the 

 next afternoon Dr. Riker's two papers, " The location of the 

 crown-gall organism in its host tissues " and " Some morphological 

 responses of the host tissue to the crown-gall organism," ^"^ were 

 read. Smith's diary account will be of interest to every botanist: 



In the p. m. two papers on crowngall which may require us to revise 

 all our notions as to the location of the bacteria. He thinks they are all 

 betw^een the cells. Botanists' dinner at Youngs Hotel in evening 225 

 present. Address by Dr. [Charles Elmer] Allen of Uni[versity} of Wis- 

 consin on the potentialities of the cell — very good. Dinner also very good. 

 I sat with Riker and his new wife. They were married on the 26[th] in 

 Phila[delphia]. She is a Smith College woman specializing in Botany and 

 Chemistry in Ufniversity] of Wisc[onsin] where she met Riker. I like 

 her and him. He is an overseas soldier. 



When Dr. Smith met Dr. and Mrs. Riker for the first time, 

 he said, " Oh you are the young people on your honeymoon. Let 



^"^ Phytopatholo,?,y 13(1): 43 (abstracts), Jan. 1923. See also, Some relations of 

 the crowngall organism to its host tissue, by Riker, Jour. A.<;nc. Res. 25: 119-132, 

 1923; Some morphological responses of the host tissue to the crowngall organism. 

 Jour. Agric. Res. 26(9): 425-435, Dec. 1923. 



