Author's Catalogue. 397 
RICKARD. T. A. 
Copper Mines of Lake Superior. V. and "VI. (Eng. Min. Jour., 
vol. 78, p. 745 and p. 785, Nov. 10 and 17, 1904.) 
ROWLEY, R. R. 
The Echinodermata of the Missouri Silurian, and a new Brach- 
iopod. (Am. Geol., vol. 34, pp. 269-282. Nov., 1904.) 
RUSSELL, I. C. 
Physiog-raphic Problems of To-day. (Jour. Geol., vol 12, pp. 
524-551. Sept. -Oct., 1904.) 
SCHUCHERT, CHARLES. 
Paleontologia Universalis. (Am. Geol., vol. 34, p. 332, Nov., 1904.) 
SMITH, E. A. 
The Cement Resources of Alabama. (Bull. 8, Geof. Sur. Ala., pp. 
61-93, 1904.) 
SPENCER, J. W. 
Submarine great canyon of the Hudson river. (Am. Geol., vol. 
34, p. 292, Nov., 1904.) 
STOSE, GEO. W. 
Physiographic studies in southern Pennsylvania. (Jour. Geol., 
vol. 12, pp. 473-485, Sept.-Oct., 1904.) 
STRETCH, R. H. 
Copper ores in the Cascade mountains. (Eng. Min. Jour., vol. 78. 
p. 789, Nov. 17, 1904.) 
TALLMON, M. C. (W. C. MORGAN and). 
Peculiar occurrence of bitumen and evidence as to Its origin. (Am. 
Jour. Sci., vol. 18, p. 363, Nov., 1904.) 
TYRRELL, J. B. 
On the northeastern portion of the district of Saskatchewan and 
adjacent parts of the district of Athabaska and Keewatin. (Geol. 
Sur. Can. Ann. Rep., 1900, Rep. F, pp. 37, 1903.) 
WEEKS, F. B. 
Bibliography and Index of North American Geology, Paleontol- 
ogy, and Mineralogy, for the year 1903. Bull. 240, U. S. G. S., pp. 
243.) 
WEIDMAN, SAMUEL. 
Widespread occurrence of Fayallte in certain Igneous rocks of 
central Wisconsin. (Jour. Geol., vol. 12, pp. 551-562. Sept.-Oct., 1904.) 
WILEY, H. W. 
The useful properties of clays. (U. S. Bur. Chem., Circular 17. 
July 25, 1904.) 
WOOD, H. O. (C. PALLACHE and). 
Crystallographic study of Millerite. (Am. Jour. Scl.. vol. 18, p. 
343, Nov., 1904.) 
