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Herbaria. 
1. Accessions. An aggregate of 84,163 specimens have 
been put to the account of the herbarium. All the desirable 
current distributions of herbarium specimens have been 
secured either as gifts or by purchase. The several explor- 
ing trips undertaken by the Garden have added thousands of 
valuable specimens, as well as some desiderata and many 
unique specimens to the collections. 
The algal collections have been increased by fully 4,800 
specimens, chiefly by several sets of exsiccatae and the col- 
lections of Dr. Howe in Porto Rico. The fungal collections 
have been increased by fully 9,300 specimens, mainly through 
the acquisition of several valuable exsiccatae and the col- 
lections of Mr. Earle in the West Indies and eastern North 
America. The bryophyte collections have been increased 
by at least 3,000 specimens, mainly from North America, 
tropical America and Europe. The collection of pterido- 
phytes has been notably enlarged by the acquisition of the 
Jenman herbarium and the collections of Professor Under- 
wood in the West Indies; the total addition of ferns and fern- 
allies amounting to fully 20,000 specimens. The more 
noteworthy additions of flowering plants came from North 
America, tropical America, including both the West Indies 
and the mainland, South America and southern Europe. 
2. MounTInc anpD ConservVING oF HERBARIUM MATE- 
RIAL. 
(2) Flat or pressed specimens. Additions amounting to 
33,254 sheets have been made tothe herbaria. These sheets 
contain about 44,000 specimens, as in the case of the algae, 
fungi, lichens, hepatics and mosses, several specimens are 
usually mounted on a single sheet. 
The accumulation of cryptogamic specimens has been 
mounted and incorporated in the herbaria. Noteworthy 
among this material is the Allen collection of Characeae and 
the Averill collection of Algae, and the algal material secured 
by Dr. Howe in Newfoundland, Bermuda, Florida and a vast 
number of mosses from all parts of the world. Most of the 
