634 Third European Journey 



Dr. Salmon was a mycologist at the University of London, 

 South-Eastern Agricultural College, located at Wye, Kent. H. 

 Wormald from there, working in 1921 on crown gall of apple 

 stocks, mulberry blight, and soft rot organisms, had corresponded 

 with Smith. He and Mrs. Smith could not go to Wye until April 

 1 1 because for April 9 Sir John Russell had arranged that they be 

 admitted to a session of the House of Commons. They went two 

 days later, however, and, under the guidance of Dr. Salmon, saw 

 the college and his work on hop and apple diseases. He showed 

 them various experiments: grafted hops for mosaic studies; fungi- 

 cidal treatments for apple scab; a new hop mildew; and sections of 

 Vefituria perhhecia " attacked by some Protozoan-like parasite." "^ 



The next day was Easter Sunday. So they visited Canterbury 

 and attended cathedral services and, after another day, during 

 which time they saw a hospital founded by John Smith in 1657, 

 they journeyed back to London. On April 15 Dr. Smith went to 

 his appointment with Dr. Murray. 



At the Imperial Cancer Research Laboratories Dr. Murray very 

 carefully examined the slides from Dr. Blumenthal's laboratory, 

 and Smith quoted ^^* him as saying, " ' I should be greatly dis- 

 turbed if they were mine.' This because the tumor is so variable 

 from rat to rat. He said it looked like an infection there are so 

 many polymorphs in it." He introduced Dr. Smith to Sir George 

 Lenthal Cheatle, a noted surgeon and doctor who became so 

 interested in his crown gall work that the following September 

 while on a journey in the United States he visited Smith's labora- 

 tory and spent a whole day studying specimens. 



Dr. Murray then arranged for the American visitor to go ten 

 miles northwest of London to meet Dr. W. E. Gye at his substation 

 laboratory, and in him Smith found the " most interesting " man 

 he had met in London. Of his work Smith wrote: "'" 



He has been working on Cancer for fifteen years and on Rous' chicken 

 sarcoma for the last two years, and has obtained wonderful results but has 

 published nothing as yet. He has established two things: 1. That the filter- 

 able virus of the chicken sarcoma is particulate. This he has done by centri- 

 fuging it and showing by inoculations that the precipitate is infectious and 

 that the supernatant fluid has lost all power to infect. The centrifuge must 



"' Tournal, Apr. 11, 1925. 

 ^""Tournal, Apr. 15, 1925. 

 "'journal, Apr. 15, 1925. 



