[MALCOLM] BIBLIOGRAPHY OF CANADIAN GEOLOGY 141 
CLAPP, FREDERICK G. and others. 
Petroleum and natural gas resources of Canada, in two volumes. Canada, 
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CLARKE, F. W. 
Analyses of rocks and minerals from the laboratory of the United States 
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CLARK, JOHN M. 
1. Causes producing scratched, impressed, fractured and recemented pebbles 
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CLEVENGER, G. H. 
Note upon the occurrence of mercury in Cobalt ores. Econ. Geol., vol. 10, 
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COLE, ARTHUR A. 
The mining industry in that part of northern Ontario served by the Timis- 
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Coe, L. HEBER. 
1. Investigation of the sand areas of the province of Quebec. Canada, Dept. 
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COLEMAN, A. P. | 
1. The climatic conditions of the early Pre-Cambrian. Br. Ass. Adv. Sc. 
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