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A valuable paper on “Freshwater Mollusca from Central Ontario’', by 
Frank Collins Baker and Alvin Robert Cahn, based on recent collections 
made in Ontario and on other material in different collections, has been 
received for publication as a museum bulletin. The senior author is 
Curator of the Museum of Natural History, University of Illinois, and the 
junior author is also a well-known zoologist on the faculty of the same 
university. The authors have generously offered to give the National 
Museum of Canada duplicate specimens of the species collected on the 
expedition, as well as cotypes of new forms that are described. This 
report is a contribution of interest both in the field of recent zoology and of 
invertebrate palaeontology . 
Lectures 
By R. M. Anderson: 
Canada’s Arctic Regions. National Museum lecture course, January 12 and 16, 1929. 
Illustrated by slides and motion picture film of the Canadian Arctic Expedition 
of 1928 “In the Shadow of the Pole”. 
Canada’s Arctic Regions. Young Men’s Club, Y.M.C.A., Ottawa, January 20, 1929. 
The Large Mammals of Canada. The Mcllwraith Ornithological Club of London. 
London Life Auditorium, London, Ontario, April 8, 1929. 
Mammal Life in the Eastern Canadian Arctic. 11th Annual Meeting of the American 
Society of MammalogLsts, University Museum, University of Michigan, Ann 
Arbor, April 10, 1929. 
Colour Changes of Lepm americanus and Other Animals. Presented by request for 
the author, Dr. Seymour Hadwen, at 11th Annual Meeting of the American 
Society of Mammalogists, April 12, 1929. (Paper published in the Canadian 
Journal of Research, vol. I, No. 2, July, 1929, pp. 189-200.) 
Canada’s Arctic Regions. At Des Moines, Iowa, West High School, to about 400 
teachers of geography and history, 4.00 p.m. To Powwow Club, 8.00 p.m., 
April 15. East High School, to about 1,700 students and teachers 9.00 p.m., 
April 16, 1929. 
Canada in the Arctic. Women’s Canadian Club of Ottawa, Chateau Laurier, May 14, 
1929. 
By Clyde L. Patch: 
Amphibians and Reptiles. Gastronomic Club, Ottawa, March 20, 1929. 
Amphibians and Reptiles. Creighton St. School, Ottawa, May 10, 1929. 
Amphibians and Reptiles. Rockliffe Vacation Club, Ottawa, July 17, 1929. 
Amphibians and Reptiles. Young Men’s Club, Ottawa, Y.M.C.A., Dec. 11, 1929. 
Amphibians and Reptiles. Unitarian Women’s Alliance, Ottawa, January 6, 1930. 
Winter Birds. McKay Church, Ottawa, January 31, 1930. 
A Trip to the Queen Charlotte Islands. Gastronomic Club, Ottawa, February 5, 
1930. 
Winter Birds. Chalmers Church, Ottawa, February 6, 1930. 
Winter Birds. St. Paul’s Church, Ottawa, February 14, 1930. 
The Museum. Unitarian Church, Ottawa, February 16, 1930. 
Museum Work 
The lack of space in the Museum halls has caused overcrowding and 
such progress as has been made in installing biological exhibits consists 
largely of removing old exhibits or replacing them by newer ones. A few 
new specimens and groups were placed on exhibition, including eared grebe, 
Franklin’s gull, coot, Florida gallinule, red-shouldered hawk, Arkansas 
kingbird, Say's phoebe, Canada jay, song sparrow, house wren, macaw, red- 
backed mouse habitat group, and two white-tailed deer. Three hundred 
and forty-three birds and smaller mammals were prepared in the taxidermy 
