50 
(1939). Recent changes of level of the land relative to sea level. 
Am. J. ScL 237: 94=98. 
(1946). Glacial Lake Agassiz, with special reference to the mode 
of deformation of the beaches. Geol. Surv., Canada, Bull. 7: 1-20. 
Leverett, F. (1932). Quaternary geology of Minnesota and parts of ad- 
jacent states. U. S. Geol. Surv., Prof. Paper 161: 1=149. 
Lougee, R. J. (1953). A chronology of postglacial time in eastern 
North America. Sci. Monthly 76: 259=276. 
Lowe, C. W. (1943). List of the flowering plants, ferns, club mosses 
and liverworts of Manitoba. Nat. Hist. Soc. of Manitoba. 
Macoun, J. M. (1911). Flora and fauna of the west coast of Hudson 
Bay. Geol. Surv., Canada, Summ. Rept. 1909-10: 281-283. 
Marr, J. W. (1948). Ecology of the forest-tundra ecotone on the east 
coast of Hudson Bay. Ecol. Monogr. 18: 118=144. 
McClure, H. E. (1943). Aspection in the biotic communities of the 
Churchill area, Manitoba. Ecol. Monogr. 13: 1=35. 
Moir, D. R. (1954). Beach ridges and vegetation in the Hudson Bay 
region. Proc. N. Dak. Acad. Sci. 8: 45=48. 
Montgomery, Margaret (1951). Does the Bay freeze? The Beaver, June, 
1951: 12-15. 
Morton, A. S. (n. d.). A history of the Canadian West. Thomas Nelson 
and Sons, Toronto and New York, pp. 1-987. 
Palliser, John (1863). Exploration in British North America during the 
years 1857, 1858, 1859, and 1860. Eyre and Spottiswoode, London. 
Pinkerton, R. E. (1932). Hudson's Bay Company. Thornton Butterworth, 
London, pp. 1-320. 
Polunin N. (1951). The real Arctic; suggestions for its delimitation, 
subdivision and characterization. J. Ecol. 39: 308-315. 
Porsild, A. E. (1955). The vascular plants of the western Canadian 
Arctic Archipelago. Nat. Mus. Canada, Bull. 135: 1-226. 
(1957). Illustrated flora of the Canadian Arctic Archipelago. Nat. 
Mus. Canada, Bull. 146: 1-209. 
Potter, D. (1932). Botanical evidence of a post-Pleistocene marine con- 
nection between Hudson Bay and the St. Lawrence basin. Rhod. 34: 
69-89. 
Preble, E. A. (1902). A biological investigation of the Hudson Bay re- 
gion. N. Am. Fauna, No. 22: 1=140. 
Radforth, N. W. (1950). Progress report on organic terrain studies. 
National Research Council of Canada, Tech. Mem. No. 16. 
(1952). A suggested classification of muskeg for the engineer. 
National Research Council of Canada, Tech. Mem. No. 24. 
Rae, John (1850). Narrative of an expedition to the shores of the Arctic 
Sea. T. and W. Boone, London. 
Rae, R. W. (1951). Climate of the Canadian Arctic Archipelago. Can. 
Dept, of Transport, Ottawa. 
Raup, H. (1943). The willows of the Hudson Bay region and the Labrador 
Peninsula. Sargentia 4: 83-127. 
