Monthly Author s Catalogue. 189' 
SPENCER, A. C. 
The efficiency of the survey. (Eng. Min. Jour., vol. 79, p. 141, 
Jan. 19, 1905.) 
SPRINGER, FRANK. 
Cleiocrinus. (Mem. Mus. Comp. Zool., vol. 25, pp. 93-114. One 
plate, Jan., 1905.) 
TODD, J. E. (and C. M. HALL). 
Description of the De Smett Quadrangle. Geol. Atlas, U S. G. 
S., Folio No. 114, 1904. 
VAN VLEET, A. H. 
Third biennial report. Territory of Oklahoma, pp. 49, 1904, 
Guthrie. 
WALCOTT, CD. 
Cambrian brachiopoda with descriptions of new genera and 
species. (Proc. U. S. Nat. Mus., vol. 28, pp. 227-337, 1905.) 
WALCOTT, C. D. 
Twenty-fifth annual report of the director of the United States 
GeologicarSurvey, to the Secretary of Interior, 1903-4, pp. 388, 25 
plates, Washington, 1904.) 
WEED, W. H. 
The copper deposits of Cape Colony, South Africa. (Eng. Min. 
Jour., vol. 79, p. 272, Feb. 9, 1905.) 
WELLER, STUART. 
The classification of the Upper Cretaceous formations and 
faunas of New Jersey. (Jour. Geol., vol. 13, pp. 71-84, Jan.-Feb., 
1905.) 
WHITE, DAVID (See SMITH, GEO E.) 
WINCHELL, N. H. 
Notes on The Geology of the Hellgate and Big Blackfoot val- 
leys, Montana. (Bull. G. S. A., vol. 15, p. 576, 1903.) 
WOODBRIDGE, DWIGHT E. 
The Mesabi Iron ore range. I, II, III, IV, V. (Eng. Min. Jour., 
vol. 79, Jan.-Feb., 1905.) 
WOODRUFF, E. G. 
Present status of the mining industry in the Wichita moun- 
tains of Oklahoma. (3rd Bien. Rep., Geol. and Nat. Hist., Okla., 
pp. 23.) 
WOODWORTH, J. B. 
The Brandon clays. (Rep. State Geol., 1903-1904, pp. 166-174, 
1904.) 
WRIGHT, G. F. 
The physical conditions in North America during man's early 
occupancy. (Rec. Past, vol. 4, pp. 15-26, Jan., 1905.) 
