( 122 ) 
at which time a short abstract was presented; but the 
paper was presented in full before the Torrey Botanical 
Club and the Department of Botany at Columbia Univer- 
sity. Dr. Rydberg also gave one lecture in the public 
lecture course of the Garden. 
Dr. Marshall A. Howe, Curator, continued to have charge 
of the collections of algae and hepaticae. In both of these 
groups, considerable additions were made tothe herbarium. 
An acquisition of some importance was the collection of 
hepaticae brought together and formerly owned by Dr. 
Howe, which was presented to the Garden by Miss Caroline 
C. Haynes. Dr. Howe devoted about four weeks in June 
and July to making collections and field studies of marine 
algae in Porto Rico in connection with a general natural 
history survey of that island. A brief account of this 
expedition has been published in the Garden Journal for 
October. In addition to reviews, Dr. Howe published 
descriptions of new species of Riccia from Porto Rico and 
completed a report on fossil calcareous algae of the Leeward 
Islands for publication by the Carnegie Institution of 
Washington. He continued to act as a member of the 
editorial board of the Torrey Botanical Club and gave 
three lectures in the Garden lecture courses. He also 
presented a paper at the recent New York meeting of the 
National Academy of Sciences. 
Dr. Fred J. Seaver, Curator, had general oversight of 
the fungous collections, and published during the year 
several papers which are preliminary to monographs for 
North American Flora, a part of which prepared by him 
is nearing completion. During the summer and autumn, 
he devoted some time to the collection and study of local 
fungi, especially the fleshy discomycetes, this work being 
supplementary to the herbarium work for North American 
Flora. He has also continued his studies and collection of 
local insect pests, especially those affecting shade trees, 
and has continued to act as associate editor of Mycologia. 
Dr. Seaver gave two lectures in the Garden lecture courses. 
