98 BIBLIOGRAPHY OF NORTH AMERICAN GEOLOGY, [bull.27J 
Pratt (Joseph Hyde) and Sterrett (Douglass B.). 
1. The tin deposits of the Carolinas. 
N. C. Geol. Surv., Bull. no. 19, 64 pp., 8 figs., 1904. 
Describes the occurrence, character, geologic relations, origin, and eeonomi 
development of the tin-ore deposits of North Carolina and South Carolina. 
Pratt (Joseph Hyde), Struthers (Joseph) and. 
1. Tin. 
See Struthers (Joseph) and Pratt (Joseph Hyde), 1. 
Prichard (William A.). 
1. Observations on Mother Lode gold deposits, California. 
Am. Inst. Mg. Engrs., Trans., vol. 34, pp. 454-466, 1904. 
See no. 980 of the Bibliography for 1903, U. S. Geol. Surv., Bull. no. 240. 
Prindle (L. M.). 
1. Gold placers of the Fairbanks district, Alaska. 
U. S. Geol. Surv., Bull. no. 225, pp. 64-73, 1 fig., 1904. 
Describes the general geology and the occurrence of placer gold and the miii 
ing operations. 
Prosser (Charles S.). 
1. Description and correlation of the Romney formation of Marylam 
Jour. Geol., vol. 12, pp. 361-372, 1904. 
Describes character and occurrence of the Romney formation and its mem be- 
in Maryland, and discusses their correlation with Devonian formations 
New York on stratigraphic and faunal evidence; discusses also the correl | 
tion of American Devonian formations with those of Europe. 
Prosser (Charles S.) and Beede (J. W.). 
1. Cottonwood Falls folio, Kansas. 
U. S. Geol. Surv., Geol. Atlas of U. S., folio no. 109, 1904. 
Describes the physiography, the occurrence, character, geologic relations, ai 
stratigraphy of Carboniferous formations, the geologic structure and eel 
nomic resources. 
Prosser (Charles S.) and Cumings (Edgar R.). 
1. The Waverly formations of central Ohio. 
Am. Geol., vol. 34, pp. 335-361, 3 pis., 1904. 
Describes the occurrence, character, and relations of the various members I 
the Waverly series in central Ohio, giving numerous detailed sections of t j 
strata. 
Prutzman (Paul). 
1. Production and use of petroleum in California. 
Cal. State Mg. Bur., Bull. no. 32, 230 pp., 64 figs., 1904. 
Describes the general geology, and the occurrence, character, production, a 
utilization of petroleum from southern California. 
Pultz (John Leggett). 
1. The Big Stone Gap coal field of Virginia and Kentucky. 
Eng. Mag., vol. 28, pp. 71-85, 11 figs., 1904. 
Includes a description of the geologic conditions existing in the Big Stone G 
coal field of Virginia and Kentucky, aud. the occurrence and character 
workable coal seams, with a generalized section of the strata. 
