175 
mittee of American Botanists to all investigators and teachers in 
plant sciences, representing all aspects of botany, plant chemistry, 
plant pathology and bacteriology, agronomy, horticulture, and 
forestry to attend an International Congress of Plant Sciences at 
Ithaca, New York, August 16-23, 1926. The holding of the 
conference and the appointing of the Organizing Committee was 
approved at representative meetings of American botanists (Bo- 
tanical Society of America, American Phytopathological Society, 
Ecological Society of America), held in Cincinnati in December, 
1923. The Ithaca Congress was, in effect (but not officially), 
the Fourth International Botanical Congress, but no legislation 
was attempted touching rules of nomenclature nor any other bo- 
tanical matters on account of the unofficial nature of the meeting. 
The work of the Congress was concerned primarily with problems 
of fundamental research and teaching. 
The Congress was organized in the following thirteen sections, 
with the chairmen chosen mainly from among those attending 
from overseas, and the secretaries, from American botanists. 
The numbers indicate the number of papers presented in the given 
section, not including round table discussions and field trips. 
Agronomy (14) ; Bacteriology (7) ; Cytology (15) ; Morphology, 
Histology and Paleobotany (16); Ecology (19) ; Forestry Ga 
Genetics (15); Horticulture (14); Physiology (17); Pathology 
(25); Pharmacognosy and Pharmaceutical Botany (20); Tax- 
onomy (25); Mycology (30). The general officers of the Con- 
gress were as follows: 
President and Presiding Chairman 
Liberty Hyde Bailey, Ithaca, New York. 
Honorary Chairmen 
Martinus Willem Beijerinck, K. Akademie van Wetenschappen, 
Amsterdam, Nederland. 
John Isaac Briquet, Jardin Botanique Genéve, Geneve, Suisse. 
Aimo Kaarlo Cajander, Helsingin Yliopisto, Helsinki, Suomi. 
Charles Flahault, Universite de Montpellier, Montpellier, France. 
Karl Goebel, Botanischer Garten und Pflanzenphysiologisches 
Institut, Miinchen, Deutschland. 
Wilhelm Ludvig Johannsen, Kjgbenhavns Universitet, Kjgben- 
havn, Denmark. 
