REVIEWS 725 



The Geology of the County of Jervois, and of Portions of the Counties 

 of Buxton and York, with Special Reference to Underground 

 Water Supplies. By R. Lockhart Jack. Geol. Surv. South 

 Australia, Bull. No. 3, 1914. Pp. 47, pi. 1, figs. 6, maps 3. 



A Review of Mining Operations in the State of South Australia during 

 the Half-Year Ended December 31st, 1913. No. 19. By 

 Lionel C. E. Gee. 1914. Pp. 66, pis. 6, figs. 3. 



The Geology of the Aroha Subdivision, Hauraki, Auckland. By 



J. Henderson, assisted by J. A. Bartrum. Geol. Surv. New 



Zealand, Bull. No. 16 (New Series), 1913. Pp. 127, pis. 10, 



figs. 7, maps and sections 10. 



Hauraki is on the northwestern coast of North Island. The report 



is noteworthy for the description and full analyses of thermal springs 



of the region. Economically Hauraki is a rich gold- and silver-producing 



district. 



Temiskaming and Northern Ontario Railway Commission. Toronto, 

 1914. The Mining Industry in That Part of Northern Ontario 

 Served by the Temiskaming and Northern Ontario Railway, 

 Ontario Government Railway. By Arthur A. Cole. Pp. 74, 

 pis. 21. 



The Geology of Steeprock Lake, Ontario. By Andrew C. Lawson. 



Notes on Fossils from Limestone of Steeprock Lake, Ontario. By 

 Charles D. Walcott. Geol. Surv. Canada, Memoir No. 28, 

 1912. Pp. 23, pis. 2. 



Lawson reports the rock to consist of basement complex of granite 

 and gneisses, unconformably overlain by the Steeprock series. This 

 series consists of interbedded traps and volcanic ash, limestone, and 

 conglomerate. Unconformable upon the Keewatin, and in different 

 structural relations from those of the Steeprock series, lie the Seine series 

 of quartzites and conglomerate. These are cut by granite gneiss. 

 Before the deposition of the Seine series, the Steeprock series had been 

 folded down into the older Archean rocks. The Steeprock limestones, 



