18 
return and placing them in proper place in the systematic collections, as 
well as looking up botanical literature. Visitors and students who come 
to work in the herbarium are assisted and shown material, and care is 
taken that specimens are properly handled. 
The details of accessions follow: 
Plants received on account of exchange 951 
New York Botanical Garden, New York, N.Y 76 
Gray Herbarium, Harvard University, Cambridge, Mass 492 
H. L. Masson, University of California, Berkeley, Cal' 170 
Dr. F. W. Pennell, Academy of Natural Sciences, Philadelphia, Pa. 100 
U.S. National Museum, Washington, D.C.. 113 
Plants received as donations. 1,324 
John Dearness, London, Ontario 1 
Rene E. Ouimet, Ottawa, Ontario 2 
R. M. Anderson, Ottawa, Ontario 1 
Dr. A. J. Grout, Newfane, Vermont 2 
D. A. Mackay, M.A., Ottawa, Ont 207 
Marcel Raymond, St. John, Quebec 11 
Dr. H. F. Lewis, Ottawa, Ontario 1,100 
Plants distributed on account of exchange 319 
Gray Herbarium, Harvard University, Cambridge, Mass 263 
M. P. Porsild, Danish Arctic Station, Godhavn, Disko, Greenland. 56 
DIVISION OF PALEONTOLOGY (Geological Survey) 
E. M. Kindle, Chief of Division, reports: 
Field Work 
The work of the staff during the year has been confined largely to 
office work. Some valuable collections have, however, been made in the 
field by members of the division. 
C. M. Sternberg collected two incomplete skeletons of mosasaurs 
from the base of the Pembina beds (Upper Cretaceous) in Manitoba. These 
are the first and only skeletons of this marine reptile that have been 
collected in Canada. Mr. Sternberg also made a collection of fossil foot- 
prints from Pennsylvanian rocks near Parrsboro, N.S. 
L. S. Russell made a small collection of dinosaurian, turtle, and fish 
remains from the Upper Milk River sandstone in southern Alberta. These 
are the first vertebrate fossils from this horizon. 
Some systematic collecting of lake shells from the standpoint of con- 
trasted environments has been done by A. La Rocque in certain lakes of the 
Ottawa district, selected with reference to their geological setting. It is 
expected that the contrasts between the living molluscan faunas from hard 
and soft water lakes will suggest the extent to which contemporaneous 
fossil lacustrine faunas may be expected to differ from one another accord- 
ing to facies. 
