(447) 
for the collections, considerable time and attention was 
devoted to conserving special groups already incorporated. 
Investigations and Assistance 
Dr. P. A. Rydberg, Curator, had charge of the collections 
of flowering plants. He continued his monographic work 
on the families Rosaceae, Fabaceae, and Carduaceae, and 
also on the flora of the Rocky Mountain region. The manu- 
script of several parts of North American Flora are essen- 
tially ready to go to press. Dr. Rydberg printed a paper 
on the roses of California under the title, “‘Notes on Rosa- 
ceae—XI” and has put his studies of the Rocky Mountain 
flora on record in the form of a manual entitled “Flora of 
the Rocky Mountains and Adjacent Plains,” which has 
just been issued from the press. He also published an 
article ‘‘Phytographical Notes on the Rocky Mountain 
region—VII.” 
Dr. Marshall A. Howe, Curator, has continued to have 
charge of the collections of algae and hepaticae in the Her- 
barium and Museums and also of the exhibition micro- 
scopes in the Systematic Museum. A considerable in- 
crease in the collection of microtome sections of calcareous 
algae as well as in the general collections of algae and hepa- 
ticae has been made. Dr. Howe has contributed a syste- 
matic treatment of the algae of Bermuda to Dr. Britton’s 
“Flora of Bermuda” and shorter papers have been pub- 
lished under the titles “Some Economic Uses and Possi- 
bilities of the Seaweeds” and “‘Notes on North American 
Species of Riccia.” 
Dr. Fred J. Seaver, Curator, remained in charge of the 
fungous collections. Research on the cup-fungi of North 
America for North American Flora has been continued. 
In this connection about five hundred specimens of this 
group from the herbarium of C. G. Lloyd have been looked 
over and determined and duplicates of the more interesting 
species retained for the Garden herbarium. Local col- 
lecting and determination of miscellaneous collections of 
