38 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 63 
for the trip. This expedition formed a part of the larger scheme of 
studying in the field the desert plants of both North and South Amer- 
ica, which had been organized by Dr. N. L. Britton, Director of the 
New York Botanical Garden, and Doctor Rose, in connection 
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Fic. 40.—A Cereus (C. lepidotus Salm-Dyck) common on these islands.. Near 
St. John’s, Antigua. Photograph by Russell. 
with their Cactus Investigation for the Carnegie Institution of 
Washington. Doctor Britton also took a party to the West Indies. 
Both parties started from New York City January 25. Doctor 
Britton and his assistants explored St. Thomas, St. Jan and others 
of the Virgin Islands, Porto Rico, and Curacao. His collection con- 
sisted of more than 3,000 species, comprising two sets, one of which 
has been sent to the National Museum as an exchange. 
