BOTANY AT ST. LOUIS 258 
J. B. 8. Norton, all of whom worked more or less upon the fungi of the 
locality while at the garden. Dr. S. M. Coulter, assistant professor of 
botany in the Shaw School of Botany, has, ever since coming to St. 
Louis, been working upon ecological problems 
The second group of botanists is a small one, of whom the following 
have been more or less intimately connected with the local work being 
carried upon the flora of the vicinity: Dr. Hermann von Schrenk, 
in charge of the Mississippi Valley Laboratory until its removal to 
Washington in 1907, has published a number of scientific papers deal- 
ing with the diseases of forest trees and of timber. Some of these 
were worked out from material collected around St. Louis, either par- 
tially or entirely. Dr. von Schrenk continues his work at St. Louis, 
having severed his relations with the United States Department of 
Agriculture upon the removal of the Mississippi Valley Laboratory 
from St. Louis to Washington. Drs. G. G. Hedgecock and Perley 
Spaulding, assistants of Dr. von Schrenk, were also engaged upon 
problems relating to the diseases of fruit and forest trees. All three 
have collected the fungi of the vicinity, and have been intimately con- 
nected with the botanical activities of the place. 
Besides the above workers should be mentioned Mr. John Kellogg, 
long employed by the garden, who is very familiar with the local flora, 
and has a very good private herbarium; Dr. N. L. T. Nelson, who is 
collecting the mosses of the vicinity; Mr. H. M. T. Hus, who is col- 
lecting the alge; and numbers of others who have secietoate in the lo- 
eality at various times. 
