MISSOURI BOTANICAL GARDEN BULLETIN 137 
den and Shaw School of Botany,’’ before the Synapsis Club 
of the Graduate School of Subtropical Agriculture, Riverside, 
California, June 18; ‘‘Salt Requirements and Hydrogen Ion 
Concentration in Solution Cultures for Seed Plants,’’ before 
the Pacifie section of the American Association for the Ad- 
vancement of Science, Pasadena, California, June 21; ‘‘The 
Importance of an Emphasis upon Researeh under Existing 
Conditions,’’ before the Science Club of the Utah Agricultural 
College, Logan, September 18. 
Recent visitors to the Garden include the following: Dr. 
KE. 8. Moberg, of the University of North Dakota; Dr. A. G. 
Johnson, Office of Cereal Disease Investigations, U. 8. Depart- 
ment of Agriculture; Dr. A. D. Cotton, Mycologist, Royal 
Botanic Gardens, Kew, England; Prof. R. Koketsu, Plant 
Physiologist, Imperial University of Kyushu, Japan, and Mr. 
Kakugoro Nakata, of Kyushu Imperial University, Japan; 
Mr. A. H. Cockayne, Government Biologist, Department of 
Agriculture, Wellington, New Zealand; Prof. Frederick Dun- 
lap, Professor of Forestry, University of Missouri; Mr. 8. M. 
MeMurran, In Charge of Nut Disease Investigations, U. 8. 
Department of Agriculture; Dr. Hermann Escher, Direktor 
der Zentralbibliothek, Zurich, Switzerland. 
The Rufus J. Lackland fellowships for the year 1919-20 
have been awarded as follows: 
Mr. W. H. Chambers, B.S. and M.S. University of Illinois. 
Mr. G. M. Armstrong, B.S. Clemson College, M.A. Univer- 
sity of Wisconsin. 
Mr. F. 8. Wolpert, A.B. University of Montana. 
Mr. E. B. Payson, B.A. University of Wyoming. 
C. R. Hursh, B.S. University of Missouri. 
Other appointments include the following: 
Mr. R. W. Webb, B.S. Clemson College, M.A. Washington 
University, research assistant; Miss Joanne L. Karrer, B.S. 
and M.S. University of Washington, and Mrs. Adele L. Grant, 
B.S. University of California, teaching fellows in the Henry 
Shaw School of Botany of Washington University, reap- 
pointed second year. 
Of the former graduate students, research fellows, and as- 
sistants in the graduate laboratory, the following have recently 
accepted new positions: Miss Anne W. Davis, as Chemist, 
Eastman Kodak Co., Rochester, New York; Dr. A. R. Davis, 
Instructor in Bacteriology and Soil Chemistry, University of 
California, Berkeley; Dr. C. W. Dodge, Instructor in Plant 
Physiology, Brown University, Providence, Rhode Island; 
