(201 ) 
which is contained in cardboard boxes of multiple sizes and 
in glass jars, was renovated and completely rearranged. 
Several hundred specimens given to Columbia University 
and deposited with the Garden, together with some speci- 
mens from the Morong herbarium, were mounted and 
incorporated in their proper places. 
Investigations and Assistance 
Dr. P. A. Rydberg, Curator, had charge of the herbarium 
of flowering plants. His time, when not occupied by 
mechanical curatorial work, was devoted to the conclusion 
of a monograph of the family Rosaceae, the earlier parts of 
which have already been printed in Norra AMERICAN 
Fora, and to the continuation of his study of the flora of the 
Rocky Mountain region. In this connection he prepared 
four papers on the plants of that region, two of which were 
printed during this year, and continued the study of the 
specimens collected in southeastern Utah last year. Dr. 
Rydberg spent a month during the latter part of the year 
at the United States National Museum, studying the 
Rocky Mountain collections contained in the National 
Herbarium, and delivered two lectures in the Garden 
lecture courses. 
Dr. Marshall A. Howe, Curator, continued to have charge 
of the collections of algae and hepaticae. The work of 
incorporating the Mitten and the Underwood collections of 
hepaticae with the general hepatic collections owned by 
the Garden was discontinued early in the year on account 
of the lack of assistance, but this work, it is expected, will be 
resumed with the beginning of the new year. Dr. Howe 
represented the Garden at the exercises commemorative of 
the one hundredth anniversary of the founding of the 
Academy of Natural Sciences of Philadelphia, held in 
Philadelphia March 19-21, and presented on that occasion 
an illustrated paper on ‘“‘Reef-building and Land-forming 
Seaweeds.” This paper, in a more amplified form, was 
published in Science for May 31, under the title “The 
