( 280 ) 
December, and the spring course of nature-study lectures 
to the pupils of grades 4B and 5B of the public schools of 
the Borough of the Bronx. He also arranged for all photo- 
graphic work, and superintended the rearrangement of the 
negative and lantern-slide collections. In addition to his 
duty as docent three week-day afternoons, Mr. Wilson 
devoted considerable time to the instruction of special classes 
from schools all over Greater New York. His principal 
curatorial work has been the determination and distribution 
of the specimens of a large part of the collections from 
tropical America, principally West Indian, which were re- 
ceived during the year. 
Mrs. N. L. Britton, Honorary Curator of Mosses, devoted 
most of her time during the spring to studying the collections 
made in the early part of the year, in the Danish West Indies, 
the Virgin Islands, and Porto Rico. She accompanied Dr. 
Britton to these islands and in company with Miss Marble, 
collected mosses, hepatics, lichens, and fungi, in various 
parts of St. Thomas and Porto Rico, and assisted in the 
care of the collections of flowering plants. During the 
summer and fall she continued exchanges with several of 
the larger European herbaria for specimens of Tortulaceae 
needed for monographic work for NorrH AMERICAN FLorRa. 
She also accompanied Dr. Britton to Bermuda, and there 
made further collections of mosses, hepatics, and lichens. 
A series of duplicate specimens of mosses, mainly from 
Bermuda and Jamaica, have been prepared for distribution. 
A critical revision of Olaf Swartz’s types of Jamaica mosses 
with lists of modern synonyms was prepared for the December 
number of the Bulletin of the Torrey Club. During the 
spring, four parts (nos. 6-9), of the series ‘Wild Plants 
Needing Protection” were published in the Journat, 
including the “Wild Azalea,” “Pink Moccasin Flower,” 
“American Laurel,” and “‘Flowering Dogwood.” She has 
also delivered a lecture on “Our Native Wild Flowers,” 
illustrated by lantern-slides, before the Garden Club of 
Larchmont, on the invitation of Miss Helena Flint. The 
accessions during the year to the moss collections included 
