72 REPORT OF NATIONAL MUSEUM, 1921. 
4 is well advanced. Doctor Rose has continued his studies, also, of 
Ecuadorean plants referred to in the last report. Mr. William R. 
Maxon, associate curator, has continued his investigation of the pteri- 
dophyta and has prepared manuscript for Part VIII of Studies of 
Tropical American Ferns. He has nearly completed a report, also, 
upon the large collection of Haitian ferns made by Dr. W. L. Abbott 
and Mr. Emery C. Leonard last year and has reviewed critically the 
West-American allies of Sedaginella rupestris, describing several new 
species. A popular article on the botanical gardens of Jamaica has 
been contributed to the Smithsonian Annual Report. Mr. Paul C. 
Standley, assistant curator, has nearly completed manuscript sum- 
marizing his studies of the trees and shrubs of Mexico, and has sub- 
mitted parts 2 and 3 for publication; parts 4 and 5 (conclusion) will 
be turned in for publication during the coming year. He has recently 
undertaken the preparation of a synoptical account of the flora of 
Central America and Panama, based primarily upon the collections 
in the National Herbarium, and in this connection proposes visiting 
Salvador, in which region practically no botanical collecting has been 
done. Mr. Standley also has completed manuscript for the Flora 
of Alaska. Mr. Ellsworth P. Killip, aid, has finished his revision of 
the genus Passiflora as represented in Mexico, Central America, and 
Panama, and the manuscript is nearly ready for publication. Mr. 
Emery C. Leonard, aid, has continued his study of the genus Scutel- 
aria. With the assistance of Mr. Standley he has nearly completed 
the identification of the phanecrogams of his Haitian collection. of 
last year. 
Dr. C. Hart Merriam, associate in zoology, continued his study on 
North American bears. Mr. N. Hollister has continued work on the 
African Artiodactyla, but it is greatly delayed by the housing of the 
mammalian study series on different floors from the basement to 
the attic. Dr. O. P. Hay, of the Carnegie Institution, has made 
constant use of the collections in connection with his work on the 
Pleistocene fauna of North America. The thanks of the Museum 
are due to Mr. Oldfield Thomas, of the British Museum, for having 
compared specimens sent to him with types and other material in 
the collections under his care. 
Dr. W. L. Abbott, associate in zoology, made two visits to the 
division of birds for purpose of examining material collected in 
Haiti and Santo Domingo by him, and giving information about the 
specimens and localities. Dr. H. C. Oberholser, of the Biological 
Survey, continued his determination of the Malayan material col- 
lected by Dr. W. L. Abbott, and made occasional identifications in 
other parts of the ornithological study series. Dr. A. Wetmore, also 
of the Biological Survey, although away from Washington most of 
the year, spent some time in work on the bird skeletons. 
