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Dr. John K. Small, curator of the museums, has continued 
his attention to the flora of southeastern United States, and 
has published the results of his work extending over the last 
ten years in an octavo volume of xii + 1,370 pages, in which 
there are descriptions of 6,364 species, 1,494 genera, 236 
families and 62 orders, including all of the known flowering 
plants, ferns and fern allies of the portions of the United 
States south of the northern boundaries of North Carolina, 
Tennessee, Arkansas and the Indian Territory as far west as 
the one hundredth meridian. During the preparation of 
this work several hundred species new to science have been 
brought to light and the descriptions of others made more ex- 
act. Dr. Small has made himself familiar with many of 
these plants in their native habitats and since the publication 
of his book spent the month of November in the field near 
Miami, Florida, in the course of which some new species were 
obtained. 
Dr. P. A. Rydberg, assistant curator, has continued his 
study of the flora of the Rocky Mountain region in the prep- 
aration of a manual covering that area. The results of his 
work on various groups and genera during the year have 
been published in ConTRIBUTIONS 36 and 37, in which several 
new species have been described. An annotated catalogue 
of the flora of Colorado has been brought to an advanced 
stage of completion and will be published soon by the Col- 
lege of Agriculture of Colorado. 
Dr. Arthur Hollick, assistant curator, acting for the U.S. 
Geological Survey, examined the Cretaceous and Tertiary 
strata of Long Island in April and May, for the purpose 
of securing data as to the water supply of the island. Ona 
second leave of absence he was detailed by the above bureau 
for field work in Alaska, and made an examination of the 
sections exposed along the Yukon River from the inter- 
national boundary to the delta of the river. The purpose of 
this work was to make collections of fossils from the various 
horizons represented, especially from the Tertiary and Meso- 
zoic beds. Dr. Hollick is also making a critical exami- 
