J. B, S. 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 dealing with the diseases of forest trees and of timber. Some of these were worked out from material collected around St. Louis, either partially 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. Hedgcock 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 connected 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. 11. M, T. Hus, who is collecting the algæ; and numbers of others who have collected in the locality at various times.
