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nation of Tertiary plants from the vicinity of the Potomac in 
Maryland. The geologic map of the Staten Island quad- 
rangle of the New York City folio of the Geologic Atlas of 
the United States, compiled from data obtained by Dr. Hol- 
lick, has been recently published by the U.S. Geological 
Survey. The article on palaeobotany for the New Inter- 
national Encyclopedia was also prepared by Dr. Hollick. The 
results of other special studies upon fossil plants from Western 
America have been published in the JouRNAL and in ConrTRI- 
BUTIONS 28 and 31. 
Dr. M. A. Howe, assistant curator, has continued his sys- 
tematic study of the marine algae of North America. A 
thorough survey was made of the algal flora of the coastal 
region of the southern, western and northern parts of Porto 
Rico in May and June. A study of the genus /tze//a in 
coéperation with Prof. L. M. Underwood was published as 
CONTRIBUTION 34 of the Garden. A systematic study of the 
algae of the Bahamas is also being made. 
Prof. F. S. Earle, assistant curator, made a collecting trip 
to eastern Cuba in March, and made a tour of Porto Rico 
investigating the plant diseases of the island for the office of 
the U. S. Experiment Stations. Work upon the Agaricaceae 
has been continued, and critical examinations of collections 
of fungi from California, Wyoming and Porto Rico, have been 
made and several new species described in various papers. 
Miss A. M. Vail, librarian, has continued her special 
studies of Asclepiadaceae from various parts of the world, 
describing several new species, one of which is published 
in CONTRIBUTION 33. 
Dr. J. H. Barnhart, editorial assistant, has brought his bib- 
liographic work upon the local floras of North America to an 
advanced stage, and his results will be published asa MEMOIR 
at an early date. 
Dr. W. J. Gies, consulting chemist, and adjunct professor 
of physiological chemistry in Columbia University, has 
under way investigation of the coloring substances and en- 
zymes of the Sarracenias, together with other work on vege- 
