(329 ) 
collection of botanical specimens was secured for the 
Garden. His duties as docent were performed as in former 
years. He also had charge of extra visiting classes from 
both public and private schools. The lantern-slide and 
negative collections, together with all photographic work, 
were under his supervision. On the excursions of the 
Torrey Botanical Club, Mr. Wilson who has been Chairman 
of the Field Committee for the past two years, obtained 
many specimens for the Local Flora collection. 
Dr. Francis W. Pennell, Associate Curator, has devoted 
his attention mainly to the study of the species of Scro- 
phulariaceae growing in the Rocky Mountain States. 
This interest, the ougrowth of his trip to that region in 
1915, has been materially aided by the opportunity to 
examine most of the specimens from these states preserved 
in American herbaria. So far the greater part of his study 
has consisted in a revision of the genus Pentstemon, a genus 
which, because of its tendency to split into many species, 
each with small areas of distribution, has yielded data of 
especial phylogenetic and phytogeographic significance. 
uring the past spring a revision, more or less tentative, 
was made of the Mexican genus Eysenhardtia. Dr. Pennell 
has published during the year several papers embodying 
earlier studies of southeastern plants. He has given two 
lectures in the Garden lecture courses. Since August he 
has had editorial supervision of the Garden Journal. 
During the past season, mostly upon vacation days or 
holidays, he has assisted in the task of building up a fuller 
working collection of the Local Flora; his efforts have 
added to this collection several thousand valuable speci- 
mens. 
Miss Margaret Slosson, ..ssistant Curator, devoted her 
time to caring forthe fernhersarium. She continued studies 
on different groups of the filmy ferns as in previous years 
and printed one paper on the genus Trichomanes. 
Dr. H. H. Rusby, Honorary Curator of the Economic 
Collections, continued to develop the collections of the 
Economic Museum. See his report. 
