weeks.] PALEONTOLOGY, PETROLOGY, AND MINERALOGY, 1901. 57 
±75 Lakes (Arthur). Prospecting- for oil in Colorado. 
Mines and Minerals, vol. 22, pp. 107-109, 5 figs., 1901. 
Contains notes on the occurrence of oil. 
±76 Oil springs of Rio Blanco County, Colorado. 
Mines and Minerals, vol. 22, pp. 150-152. 5 figs., 1901. 
Describes the geologic structure and occurrence of oil. 
±77 Some Idaho mining districts. 
Mines and Minerals, vol. 22, pp. 203-206, 5 figs., 1901. 
Contains notes on the geology of the State and the character and 
occurrence of ore bodies. 
±78 The geological occurrence of oil in Colorado. 
Abstract: Sci. Am. Suppl., vol. 52, p. 21505, 1901. 
±70 Lambe (L. M.). A revision of the general and species of Canadian 
Paleozoic corals. The Madreporia aporosa and rugosa. 
Can. Geol. Surv., Cont. to Can. Paleont, vol. 4, pt. 2, pp. 97-198, 
pis. 6-18, 1901. 
(Not seen. ) 
±80 Lane (Alfred C.). Michigan limestones and their uses. 
Eng. & Mg. Jour., vol. 71, pp. 662-663, 1 fig., 693-694, and 725, 1901. 
Describes the occurrence, character and uses of the limestones derived 
from the several geologic horizons in Michigan. 
±81 The pre-Glacial surface deposits of Lower Michigan. 
Abstract: Science, new ser., vol. 14, pp. 788-799, 1901. 
Describes briefly the drainage systems and the character of the bed 
rock material. 
±82 Lawson (Andrew C). A feldspar-corundum rock from Plumas 
County, California. 
Abstracts: Jour. Geol., vol. 9, p. 78 (J p.), 1901. Geol. Soc. Am., 
Bull., vol. 12, pp. 501-502 (| p.), 1901. 
Gives chemical analysis of the feldspar. 
±83 The drainage features of California. 
Abstracts: Jour. Geol., vol. 9, pp. 77-78, 1901. Geol. Soc. Am., Bull., 
vol. 12, p. 495 dp.), 1901. 
Discusses the causes which have determined the drainage features of 
the Coast, Klamath and Sierra Nevada ranges. 
±8± Joseph Le Conte. 
Science, new ser., vol. 14, pp. 273-277, I pi., 1901. 
Gives a sketch of his life and work. 
48±a- - and Palache (Charles). The Berkeley Hills [California]. A 
detail of Coast Range geology. 
Univ. of Cal., Dept. of Geol., Bull., vol. 2. pp. 349^50, pis. 10-17, and 
map, 1901. 
Describes the character, occurrence and relations of the formations of 
the region, erosion intervals, faults, and the microscopic characters of 
the volcanic rocks. 
