Last Work. Final Honors 611 



on Sequoia sevipervireus. He also showed [Smitli] the ms. of his 

 thesis for the Doctorate on Tumors of Conifers and asked [him] 

 to read it,"' whicli he did that night. Next day the two scientists 

 went to Bois Vinccnncs and found not only a Sequoia with tumors 

 resembling crown gall but also, about forty rods away, another 

 tree of the same species free of tumors. Small tumors on an Abies 

 on the same grounds were discovered. Dufrenoy took specimens 

 of each for further study and Smith noticed '" a long row of 

 Berberis (many species)." 



En route to the Jardin dcs Plantcs from the Ecole d' Agriculture 

 et d' Horticulture de la Ville de Paris, they called on Professor 

 Guilliermond to whom Smith some two weeks before had been 

 introduced at a dinner at Dufrenoy's home. Smith, during the 

 next summer, would try to demonstrate by special fixations and 

 dilute stains crown gall bacteria in large peripheral cells of tobacco 

 stem tumors, and to differentiate the bacteria from mitochondria." 

 Guilliermond was believed to be " the best cytologist in France," '"' 

 and, in his laboratory, he showed them slides of stained mito- 

 chondria of Elodea, Iris, Lilium, Pisum, Saprolegnia, and other 

 plants. Smith thought him " a superb technician." He showed 

 him his crown gall photographs and photomicrographs. Guillier- 

 mond told him that " by his methods we ought easily to distinguish 

 between mitochondria and bacteria in crown-gall cells — in five 

 minutes, he said," and he presented Smith with a copy of his 

 last important paper, " Nouvellcs recherches sur les constituants 

 morphologiques du cytoplasme de la cellule vegetale." Together 

 the next day they went to the Madame Curie laboratories where 

 Professor Regaud and Dr. Antoine Lacassagne and other men 

 whom Smith met took him through the new building, their labora- 

 tories, and the examination, lecture, and work rooms. 



As time permitted, since his return to Paris, Dr. Smith had been 

 preparing his conference address on bacterial diseases of plants. 

 Before regarding it finished, he submitted it to Dr. Foex, and on 

 January 27 he and Mrs. Smith drove to the " Lecture room of the 

 Museum of the Jardin des Plantes where [he] lectured to about 

 65 persons. Heavy rain all day discouraged some and others are 

 reported ill, but I, ' Smith wrote of the occasion, 



Tt 



Diar>', June 18, July 30, 1925. 

 Journal, Jan. 6, Jan. 20-21" 1925. 



