REVIEWS 335 



the oil in the north central Texas region, the northeastern source of the 

 Bend sediments, and the very great trustworthiness of lithologic corre- 

 lation in regions where faunas change slowly and sediments accumulate 

 rapidly. 



The one disappointment felt by the reviewer was due to the lack of 

 expHcitness in dealing with the technology of examinations. For 

 novices a careful outline of the things to be sought for in making litho- 

 logic subsurface correlations would be helpful. 



C. H. B., Jr. 



Report on Mining Operations in the Province of Quebec, iQig. 

 Province of Quebec, Canada, Bureau of Mines, 1920. Pp. 160. 



The phenomenal growth in the mineral industries of Quebec is 

 evidenced by the increase in the value of her annual mineral output 

 from two and a half million dollars in 1900 to nearly twenty-one million 

 dollars in 19 19. 



While metals contribute to some degree to this output, Quebec's 

 most important resources are non-metallic — asbestos and building- 

 materials dominating. 



Asbestos is to be credited with over half of the total mineral output 

 by value in 1919, the mines of Quebec constituting the world's principal 

 source of this mineral. The United States is very directly interested in 

 this Canadian industry because about 89 per cent of the output comes 

 to the United States, mainly in an unmanufactured state, and is there 

 fabricated for use in the United States and for shipment abroad. Some 

 3 per cent of the Canadian output is exported directly to England and the 

 remainder to various other countries of Europe and to Japan. 



The magnesite industry of Quebec, which came into prominence 



with the cutting off of the German and Austrian imports during the war, 



declined in 1919 to less than half the 19 18 tonnage. 



E. S. B. 



Deposits of Iron Ore near Stanford, Montana. By L. G. Westgate. 

 U.S. Geological Survey, Bull. 715-F, 1920. Pp. 85-92. 



This report describes several bodies of low phosphorus-hematite ore 

 in the northern part of the Little Belt Mountains. The deposits are as 

 yet undeveloped. Tonnages at two of the best showings are roughly 

 estimated at one and one and one-third million tons respectively. 



