MISSOURI BOTANICAL GARDEN BULLETIN 7 
RESEARCH AND INSTRUCTION 
The number of courses of instruction primarily for grad- 
uate students offered during 1919-20 is a considerable in- 
crease over that of 1918-19, due chiefly to two causes, as fol- 
lows: First, under war conditions it was desirable to make 
formal courses (involving lectures and laboratory work) sec- 
ondary to the informal courses, the latter being concerned 
primarily with the direction of research. Secondly, inasmuch 
as new graduate students were registered both in 1918-19 and 
in 1919-20, it became necessary to extend to all the opportu- 
nities in the way of formal courses usually distributed over 
two years. The extent of the research work now in progress 
is perhaps greater than at any previous time. 
In addition to the instructional work and research referred 
to above, some of the time of members of the scientific staff 
and the facilities of the laboratory have been utilized in the 
promotion of scientific work in collateral ways, some of which 
may be mentioned. The Director, Dr. George T. Moore, was 
appointed General Secretary of the American Association for 
the Advancement of Science and had charge of the arrange- 
ments for the meeting of this association and affiliated socie- 
ties in St. Louis, December 29-January 1. At the same meet- 
ings Dr. B. M. Duggar served as the local representative of 
the Botanical Society of America, American Phytopathologi- 
cal Society, and the American Ecological Society. During 
the summer of 1919 Mr. R. W. Webb performed the duties 
of field assistant in the Office of Cereal Investigations, Bureau 
of Plant Industry, United States Department of Agriculture. 
Dr. Duggar spent the summer in research work at the Coastal 
Laboratory of the Carnegie Institution of Washington, located 
at Carmel, California. For a period of several months the 
facilities of the graduate laboratory were extended to several 
pathologists representing the Office of Cereal Investigations of 
the Bureau of Plant Industry while engaged in a study of a 
serious disease (known as foot rot) of wheat prevalent in the 
Illinois bottoms in the vicinity of East St. Louis. 
Scientific and Popular Lectures—The more important of 
the scientific and popular lectures given by members of the 
scientific and Garden staffs during 1919 are as follows: 
B. M. Duggar, January 13, before the Washington Univer- 
sity School of Medicine, ‘‘Hydrogen Ion Concentration and 
Bacterial Activity.”’ 
