10 MISSOURI BOTANICAL GARDEN BULLETIN 
G. H. Pring, June 22, before the Women’s Christian Tem- 
perance Union, ‘‘God’s Beautiful Flowers and How They are 
Used.’’ 
George T. Moore, August 3, before the Teachers’ College, 
Columbia University, ‘‘A Modern Botanic Garden in Relation 
to Community Needs.’’ 
Hermann von Schrenk, September 15, before the conven- 
tion of the American Association of Port. Authorities, at 
Toronto, ‘‘Marine Borers.’’ 
L. P. Jensen, October 2, before the St. Louis Scout Masters’ 
Association, at the Francis Home, ‘‘Some Interesting Facts 
About Trees.’ 
B. M. Duggar, October 10, before the plant pathologists, at 
the University of Wisconsin, ‘‘Some Aspects of Current Re- 
search in Mosaic Diseases.’’ 
B. M. Duggar, October 10, before the biologists of the Uni- 
versity of Wisconsin, ‘‘ Micro-organisms and Environment.’’ 
G. H. Pring, October 10, before the St. Louis Aquarium 
Society, ‘‘ Aquatic Plants.”’ 
L. P. Jensen, October 20, before the Boy Scouts of Web- 
ster Groves, at the Bristol School, ‘‘The Use of Trees and 
Shrubs.’’ 
George T. Moore, November 22, before the meeting of the 
St. Louis Library Association, at the Garden, ‘‘The Garden 
Library and Some of Its More Unusual and Rare Books.”’ 
HERBARIUM 
The herbarium has continued a normal growth during the 
past year. The representation of the flora of North America, 
particularly the southwestern United States, has been greatly 
augmented. Substantial additions of plants also have been 
made from Mexico, Central America, the West Indies, South 
America, Europe, Africa and Australia. On account of the 
congestion in certain parts of the herbarium it has been neces- 
sary to shift a large part of the collection in order to gain 
sufficient space to insert the specimens mounted during the 
year. This change was effected during the summer months 
without great inconvenience to the department. Additional 
case-capacity, however, is necessary in order to care for ade- 
quately the rapidly growing collections. A large part of the 
curator’s time has been devoted to a more thorough organiza- 
tion of several families of vascular plants in order that the 
