Revieivs— University of California Publications. 131 



industry (with special reference to the Sudbury region), and copper 

 In the Sudbury nickel-field an experimental magnetometric survev 

 was made, and the results show the magnetometer to be of signal 

 assistance in such work. There are two appendices to the volume, 

 one being a preliminary report on the mineral production of Canada 

 for 1911, and the second an account of the explosive industry. 

 A magnetometric map of a small area in the Sudbury nickel district 

 and plans of the new headquarters of the Mines Branch are included 

 among the illustrations. 



Prom the same Department we have received also a detailed 

 statistical I'eport (145 pp., 10 plates, and numerous illustrations) on 

 the utilization of peat fuel for the production of power. This is 

 u record of experiments conducted at the Fuel-testing Station, 

 Ottawa, 1910-11, and is divided into two parts : first, a description 

 of the Korting producer-gas plant and cleaning system, with complete 

 detailed records of trials and tests ; secondly, a description of the 

 alterations made to the plant, with similar records taken after 

 alteration . 



IX. University of California Pqb ligations. — From the Geological 

 Department of this University we have received Bulletins 6-8 of 

 vol. vii. Bulletin 6 is by Mr. C. L. Baker, on the physiography 

 and structure of the Western El Paso B,ange and the Southern 

 Sierra Nevada. The observations were made during a collecting 

 reconnaissance for vertebrate fossils, and therefore do not aim at 

 completeness. A sketch of the geography of the El Paso Range is 

 given, and the rocks are seen to consist of a basement complex of 

 metamorphic and plutonic rocks, a superjacent series of sedimentary 

 and volcanic rocks, and the alluvium. The Ricardo erosion surface 

 of the Southern Sierra Nevada is described, and it is seen that the 

 southern Sierra front has not shared in the uplift that affected the 

 country to the east and west. 



A discussion by Mr. Bruce Martin on the fauna of the type locality 

 of the Monterey Series in California occupies Bulletin 7. Details of 

 location, stratigraphy, and lithology are given, and the various 

 members of the fauna considered ; and the general results support the 

 correlation of the beds of the type locality with the middle and lower 

 portion of Monterey Miocene of San Pablo Bay. 



In the eighth Bulletin Mr. L. Kellogg describes the Pleistocene 

 rodents from the Pollen Creek and Samwell Caves, and from the 

 asphalt deposits at Rancho La Brea, near Los Angeles. These rodents 

 are very persistent, for while they belong to genera still living, some 

 of the carnivores and ungulates found with them are of genera now 

 extinct. The rodent fauna of the caves does not accord with the 

 present topography of the region, but that of the asphalt deposits is 

 near to the existing fauna of the region and belongs to the Upper 

 Sonoran zone. Two new sub-species are described: Scuirus griseus 

 fossilis from the Samwell Cave and Citellus beecheyi captus from 

 Rancho La Brea. 



