61 
visitor at the Garden on March 22. Professor Burrill has been 
attending the centenary meeting of the Academy of Natural 
Sciences of Philadelphia. 
Volume 7, part 3, of North American Flora was issued in April, 
1912. This part consists of a continuation of the Aecidiaceae, 
a family of plant rusts which was begun in part 2, of the same 
volume. The genus Gymnosporangium or cedar-apple rusts was 
treated by Dr. F. D. Kern and the remainder of the part by 
Professor J. C. Arthur, of Purdue University Agricultural Experi- 
ment Station. The entire part consists of 106 pages of text. 
Dr. Wilder D. Bancroft, professor of physical chemistry at 
Cornell University, delivered a lecture on March 15, at the chem- 
of local botanists on participated in the discussions which 
follow 
Dr. ae T. Moore has been elected to succeed Dr. William 
Trelease as director of the Missouri Botanical Garden and will 
enter upon the duties of the new position May 1, 1912. Dr. 
oore is a graduate of Harvard University and was assistant 
in the cryptogamic laboratory of that institution for two years. 
He also served for a time as instructor in cryptogamic botany 
in Radcliffe College and later was in charge of botany at Dart- 
mouth. He was employed by the United States Department of 
Agriculture for several years, first as physiologist and algologist 
and was later put in charge of the laboratory of plant physiology. 
In 1909 he was appointed professor of plant physiology and ap- 
plied botany in the Shaw School of Botany and at the same time 
served as plant physiologist to the Missouri Botanical Garden. 
Dr. Moore is the author of a number of research papers, several 
of them dealing with the contamination of water supplies by 
algae and other phases of economic botany. 
At the recent centenary of the Academy of Natural Sciences 
of Philadelphia, Dr. C. Stuart Gager, director of the Brooklyn 
