100 BIBLIOGRAPHY AND INDEX OF N. A. GEOLOGY, [bull. 162. 
879 Whitten (W. M.). "Quicksand pockets" in the "blue clay" of 
South Beud [Indiana]. 
Ind. Acad. Sci., Proc. 1897, pp. 234-240, 3 tigs., 1898. 
Describes local features of the drift. 
880 Whittle (Charles L.). The clays and clay industries of Massa- 
chusetts. 
Eng. and Mg. Jour., vol. lxvi, pp. 245-246, 1898. 
Includes notes on the occurrence and distribution of clay deposits in 
Massachusetts. 
881 The building and road stones of Massachusetts. 
EDg. and Mg. Jour., vol. lxvi, pp. 336-337, 1898. 
Describes their general character and occurrence. 
882 Wieland (George E.). The Protostegan Plastron. 
Am. Jour. Sci., 4th ser., vol. v, pp. 15-20, pi. ii, tigs. 1-2, 1898. 
Describes material from the Cretaceous of South Dakota. 
883 Wilkens (H. A. J.), Nitze (Henry B. C.) and. Gold mining in 
North Carolina and adjacent southern Appalachian regions. 
See Nitze (H. B. C.) and Wilkens (H. A. J.), No. 579. 
884 Williams (Albert, jr.). Faults. 
Mines and Minerals, vol. xviii, pp. 298-301, 10 figs., 1898. 
Describes the results of faulting and discusses the origin of faults. 
885 Williams (E. H., jr.). [Geology and its relations to topography.] 
Am. Soc. Civil Engrs., Trans., vol. xxxix, pp. 84-86, 1898. 
In discussion of paper by John C. Branner on the same subject. 
886 Notes on Kansan drift in Pennsylvania. 
Am. Phil. Soc, Proc, vol.xxxvii, pp. 84-87, 1 fig., 1898. 
Discusses certain glacial phenomena and describes the drift at East 
Warren, Pennsylvania. 
887 Williams (Henry Shaler). The classification of stratified rocks. 
Jour, of Geol., vol. vi, pp. 671-678, 1898. 
Describes the work of the International Congress of Geologists and 
the U. S. Geological Survey in adjusting classifications and nomencla- 
tures to a common scheme. 
888 [Review of "Volcanoes of North America; a reading lesson 
for students of geography and geology," by Israel C.Russell.] 
Am. Jour. Sci., 4th ser., vol. v, pp. 74-75, 1898. 
889 [Review of " Geology of Johnson County, Iowa," by Samuel 
Calvin.] 
Am. Jour. Sci., 4th ser., vol. v, pp. 149-151, 1898. 
890 [Review of " Earth movement," by Charles R. Van Hise.] 
Am. Jour. Sci., 4th ser., vol. v, pp. 230-231, 1898. 
891 [Review of "The development of Glyphioceras and the phy- 
logeuy of the Glyphioceratidtc," by James Perrin Smith.] 
Am. Jour. Sci., 4th ser., vol. v, p. 315, 1898. 
