MISSOURI BOTANICAL GARDEN BULLETIN 55 
America,’’ before the following audiences: March 24, Sutton 
School Parent-Teachers’ Association, and the pupils of the 
Kennard School; April 8, Grant School Patrons’ Association ; 
April 10, Cleveland High School Parent-Teachers’ Associa- 
tion; April 11, Buder School Patrons’ Association and Clifton 
Heights Mothers’ Circle; April 14, Good Will Club banquet 
at the Claridge Hotel. 
Professor Jean Massart, visiting professor to America 
under the Educational Foundation established by the Com- 
mission for Relief in Belgium, delivered a lecture in the 
lecture room at the Garden on Saturday afternoon, March 
29, on ‘‘Reflexes of Fungi.’’ Professor Massart is the author 
of many papers on botanical subjects and has an international 
reputation as a botanist. He is professor of botany at the 
University of Brussels and a member of many prominent 
scientific organizations of Belgium and France. 
Dr. B. M. Duggar, Physiologist to the Garden, who is on 
a six-months leave of absence to carry on research work at 
Johns Hopkins University, has given the following lectures 
at Baltimore: March 10, before the Society for Hygiene, 
“The Toxicity of Sulphur;’’ February 11, before the staff 
and graduate students in medical zoology, Johns Hopkins 
University, ‘‘The Present Status of Virus Diseases of Plants ;’’ 
March 13, before the Journal Club in Medical Zoology, 
‘‘Hydrogen-Ion Concentration, a Factor in Absorption and 
Metabolism ;’’ April 3, before the Biological Journal Club, 
‘‘Wilterable Viruses;’’ April 10, before the seminar of med- 
ical zoology, Johns Hopkins School of Hygiene, ‘‘Parasitism 
Among Fungi.’”’ 
