weeks.] PALEONTOLOGY, PETROLOGY, AND MINERALOGY, 1904. 17 
Angermann (Ernesto) — Continued. 
2. Apuntes sobre el Paleozoico en Sonora [Mexico]. 
Mexico, Inst. Geol., Par., t. 1, pp. 81-90, 1 pi., 1 fig., 1904. 
Gives observations upon the occurrence and character of the geologic forma- 
tions of Sonora, particularly upon Paleozoic deposits. 
3. El tierro meteorico de Bacubirito (Est. de Sinaloa). 
Mexico, Inst. Geol., Par., t, 1, pp. 113-116, 1 pi., 1904. 
Observations upon size and occurrence of the meteorite of Bacubirito, Mexico. 
Armstrong (L. K.). 
1. The Alberta [Canada] coalfield. 
Mg. Rep., vol. 50, pp. 548-550, 3 figs., 1904. 
Gives notes upon the general geology of the region, and describes the occur- 
rence and character of the coal beds, and the character of the coals. 
Arnold (Ralph). 
;1. Faunal relations of the Carrizo Creek beds of California. 
Abstract: Science, new ser., vol. 19, p. 503, 1904. 
Arnold (Ralph), Haehl (H. L.) and. 
1. The Miocene diabase of the Santa Cruz Mountains in San Mateo 
County, California. 
See Haehl (H. L.) and Arnold (Ralph), 1. 
Ashley (George H.). 
BjL The Cumberland Gap coal field of Kentucky and Tennessee. 
U. S. Geol. Surv., Bull. no. 225, pp. 259-275, 1904. 
Describes location, stratigraphy, and geologic structure of the field, the char- 
acter and geologic relations of the coal seams, and the mining developments. 
2. The Cumberland Gap coal field. 
Mg. Mag., vol. 10, pp. 94-100, 1 pi., 5 figs., 1904. 
Describes the location and general geologic structure of the coal basin occupy- 
ing parts of Kentucky and Tennessee, and the occurrence, character, and 
mining of the coals. 
3. [Geologic structure of the region around Middlesboro, Ky. J 
Abstract: Science, new ser., vol. 19, p. 856, 1904. 
A.tkin (Austin J. R.). 
. The genesis of the gold deposits of Baskerville (British Columbia) 
and the vicinity. 
London Geol. Soc, Quar. Jour., vol. 60, pp. 389-393, 1904 
B. 
Sabcock (E. N.) and Minor (Jessie). 
. The Gray don sandstone and its mineral waters. 
Drury Coll., Bradley Field Geol. Station, Bull., vol. 1, pp. 22-31, 1904. 
Describes the character and occurrence of the sandstone and discusses its 
origin and bearing upon the geologic history of the region. Describes 
mineral waters coming from the sandstone. 
Bull. 271—05 -2 
