CONTENTS 



PAGE 



I. Boyhood, early sclioolini; and fcachinj^. Flora of Michigan. 



Study at Michigan Agricultural College 1 



II. Background of work and study in public health, hygiene, and 

 sanitation, pathology and bacteriology, preparatory for 

 research career in the plant sciences 31 



III. Early work on plant pathology and bacteriology in North 



America. Study under Professor Spalding at the University 



of Michigan 89 



IV. Vegetable pathologist with the United States Department of 



Agriculture. Fungous diseases of plants, and peach 

 yellows, his specialties I35 



V. Investigations in plant pathology placed on a nation-wide 



basis 179 



VI. Early studies in bacterial plant diseases. Fusarium diseases of 



plants. Florida and California laboratories .... 228 



VII. Recognition of the science of plant bacteriology in America 277 



VIII. Smith chief of a laboratory of plant pathology. Recognition 



of plant bacteriology in Europe 333 



IX. First European journey. Plant breeding and the Third Inter- 

 national Conference on Genetics. Studies on crown gall of 

 plants and the etiology of plant tumors. Recognition of its 

 importance as an aid to medical research on animal cancer 395 



X. Second European journey. International Congress of Medi- 

 cine. Further research on plant diseases, especially the 

 plant tumor and various coordinate problems . . . 467 



XI. Further discussion of the crown gall-animal analogy — various 

 aspects of fact and theory. A suggested multiple factor 

 hypothesis of pathological growth. Further researches in 

 bacterial, fungous and virus diseases of plants . . . 521 



XII. Third European journey. Coordinate study of cancer research. 

 International Congress of Plant Sciences of 1926. Last 

 work. Final honors 573 



Ind 



ex 



655 



IX 



