MISSOURI BOTANICAL GARDEN BULLETIN 105 
R. A. Studhalter, “The factors involved in the dissemina- 
tion of the chestnut bark disease.” 
Members of the graduate laboratory registered during the 
past year for the advanced degrees in the Henry Shaw School 
of Botany of Washington University have made the follow- 
ing arrangements for the period of the summer or longer: 
Dr. G. W. Freiberg, Messrs. W. S. Reeves, and J. W. Severy 
enlisted in the Washington University Base Hospital, Unit 
21, and are now in France; Dr. 8. M. Zeller will give work 
in the summer school at the Puget Sound Marine Station ; 
Mr. D. C. Neal has undertaken a study of the citrus canker 
in Alabama in coéperation with the state and federal service ; 
Mr. I. C. Hoffman is continuing his investigations of 
cucumber troubles in Indiana, a project involving the co- 
éperation of the Bureau of Plant Industry and the Heinz 
Co.; Mr. C. W. Dodge is devoting the summer to agricul- 
tural work at his home, Pawlet, Vermont; Mr. Henry 
Schmitz will assist in the summer work in botany at the 
University of Washington; Mr. H. M. Jennison returns to 
Montana Agricultural College as Assistant Professor of 
Botany; Mr. R. A. Studhalter is engaged upon a study of 
the rusts of conifers undertaken by the office of Forest_Path- 
ology, U. S. Department of Agriculture, in the state of Wash- 
ington; and Messrs. W. W. Bonns and L. J. Pessin will 
spend the summer in the laboratory at the Garden. 
