Atithoi^s' Catalogue. 393 
McCallie, S. W. 
The occurrence and history of gold. (Bull. No. 4-A, Geol. Sur., 
(jeorgia, 1896, pp. 7-2,^.) 
McCallie, S. W. (W. S. Yates and Francis P. Kingj. 
A preliminary report on a part of the gold deposits of Georgia. 
(Bull. 4-A, Geol. Sur. Georgia, pp. 542, maps, 21 pis., 1896.) 
McGee, W. J. 
The Geospheres. (Nat. Geog. Mag., vol. 9, Oct. 1898, pp. 435- 
447-) 
Rawson, F. Leslie. 
Some lava flow^s of the western slope of the Sierra Nevada, Cali- 
fornia. (Bull. No. 89, U. S. Geol. Sur., pp. 74, 11 pis., 1898.) 
Sardeson, F. W. 
Intraformational conglomerates in the Galena series. (Am. 
Geol., vol. 22, pp. 315-323, pL, Nov. 1898.) 
Sardeson, F. W. 
Remarks on the loess. (Proc. Iowa Acad. Sciences, vol. 5, p. 11, 
1898, [abstract].) 
Todd, J. E. 
Degradation of loess. (Proc. Acad. Sciences, vol. 5, pp. 46-^1. 
1898.) 
Tyrrell, J. B. 
Report on the Doobaunt, Kazan and Ferguson rivers, and the 
northwest coast of Hudson bay, and on two overland routes from 
Hudson bay to lake Winnipeg. (Geol. Sur. Can., Rep. 9, New 
Series, May 10, 1897, 11 plates.) 
Upham, Warren. 
Giants' kettles near Christiania and in Lucerne. (Am. Geol., vol. 
22, pp. 291-299, Nov. 1898.) 
Vaughan, T. Wayland (Robt. T. Hill andi. 
The Lower Cretaceous Gryphctas of the Texas region. (Bull. 
151, u. S. Geol. Sur., pp. 66, 35 pis., 1898.) 
Walcott, C. D. 
Fossil Medusa:. (Mon. XXX, U. S. Geol. Sur., pp. viii and 201, 
pis. 47, 1898.) 
Walker, T. L. 
Causes of variation in the composition of igneous rocks. (Am. 
Jour. Sci., Nov. 1898, pp. 410-415.) 
Weeks, F. B. 
Bibliography and index of North American geology, paleontology, 
petrology and mineralogy for the year 1896. (Bull. No. 149, U. S. 
Geol. Sur., pp. 152, 1897.) 
Weeks, F. B. 
Bibliography and index of North American geology, petrology and 
mineralogy for the year 1897. (Bull. 156, U. S. Geo). Sur., pp. 130, 
1898.) 
