183 
features of organization which appear to be superior to our own, 
t. 
necessary for us to concentrate our efforts upon our deficiencies, 
and this with the confident expectation that we can now accom- 
plish results of far-reaching importance in a short period of time. 
Respectfull bmi 
pect eny submitted: N. L. Britton, 
Director-in- Chief. 
REPORT ON EXPLORATION AND COLLECTION 
D te} 
(Presented and ordered printed, Nov. 21, 1900.) 
To THE ScrentiFIc DireEcTors, 
Gentlemen: Under the authority granted me relative to the 
use of the appropriation for exploration and collecting, amount- 
ing to $1,000, voted by the Board of Managers at the annual 
meeting of 1900, the following work has been accomplished. 
Dr. P. A. Rydberg, Curator of the Herbarium, spent about 
two ee? in southeastern Colorado, in company with Mr. H. 
A. Vreeland, ere assistant; they obtained between 5,000 
and 6,000 herbarium specimens, ineludiie a considerable number 
new to science, some specimens available for museum exhibition, 
and a considerable number of seeds and roots for the plantations. 
Dr. D. T. MacDougal, First Assistant, spent about a month in 
sm the pened River Forest Reserve in northern Idaho, and 
ecured about 1,000 herbarium specimens, together with many 
fe nts and wae he also continued there his studies on the 
influence of temperature on geographic distribution. 
Dr. Marshall A. Howe, of Columbia University, spent over a 
nth in Bermuda and four weeks on the New England coast in 
ce prosecution of his studies on the Algae ; he secured between 
and in fluid, many of which are noteworthy additions to our col- 
