14 LIST OF PUBLICATIONS EXAMINED. 
Scientific American Supplement, Vols. XLV-XLVI, 1898. New York, N. Y. 
Smithsonian Institution: Annual Report for 1897; Miscellaneous Collections, Vols. 
XXXVII-XXXVIII and Nos. 1081, 1090, 1125, 1126, 1170. Washington, D. C. 
Soci^te" Ge"ologique de France : Bulletin, Vol. XXVI, Nos. 1-5, 1898. Paris, France. 
Stone, Vol. XVI, Nos. 2-6 ; Vol. XVII ; Vol. XVIII, No. 1, 1898. Chicago, 111. 
South Dakota Geological Survey : Bulletin No. 2, 1898. Vermilion, S. Dak. 
Technology Quarterly, Vol. XI, 1898. Boston, Mass. 
The Mineral Industry for 1897, 1898. New York, N. Y. 
The Plant World, Vol. I, Nos. 4-12 ; Vol. II, Nos. 1-3, 1898. Binghamton, N. Y. 
Texas Academy of Science : Transactions, Vol. II, No. 1, 1897. Austin, Tex. 
Torrey Botanical Club : Bulletin, Vol. XXV, 1898. New York, N. Y. 
United States Geological Survey: 18th Annual Report, Parts II-III; 19th Annual 
Report, Parts I and VI, 1898 ; Monographs XXX, XXXI, and XXXV ; Bulletins, 
Nos. 88-89,150-156; 
Geologic Atlas of the United States, Folios, Nos. 42-50 ; 
Topographic Atlas of the United States, Folio No. 1 ; Water-Supply Papers, Nos. 
XII-XVI, 1898. Washington, D. C. 
United States National Museum : Annual Report for year ending June 30, 1896; Pro- 
ceedings, Vol. XX ; Bulletin, Vol. XL VII, parts 2-3, 1898. Washington, D. C. 
Wagner Free Institute of Science: Transactions, Vol. Ill, part 3, 1895; Vol. IV, 1896; 
Vol. Ill, part 4, and Vol. V, 1898. Philadelphia, Pa. 
Wisconsin, Geological and Natural History Survey, Bulletin, No. Ill, Scientific 
Series No. 2, 1898. Madison, Wis. 
Yorkshire Geological and Polytechnic Society : Proceedings, new ser., Vol. XIII, 
part 3, 1898. Leeds, England. 
Zeitschrift fur Praktische Geologic, 1898, Hefte 1-12, 1898. Berlin, Germany. 
