weeks.] LIST OF PUBLICATIONS EXAMINED. 13 
Science, Vol. XXIII, Nos. 570-581. New York. 
Scientific American, Vols. LXX-LXXI. New York. 
Scientific American Supplement, Vols. XXXVII-XXXVIII. New York. 
Smithsonian Institution: Annual Report 1891-92 (published in 1893), and Annual 
Report 1892-93; Miscellaneous Collections, Vols. XXIV and XXXVI and 
Nos. 844, 854, 856, 969, and 970. Washington, D. C. 
Socidte" acaddmique de Brest: Bulletin, 2d ser., Vol. XIX. Brest, France. 
Societa geologica italiana: Bulletin, Vol. XIII. Rome, Italy. 
Soci6t6 ge"ologique de Belgique : Annals, Vol. XXI. Liege, Belgium. 
Soci6t6 geologique de France : Bulletin, Vol. XXI, Nos. 5-8, and Vol. XXII, Nos. 
1-6; Memoirs, Vol. IV, Fascicle 1, 1893. Paris, France. 
South Dakota, Geological Survey : Bulletin No. 1, a preliminary report on the geology 
of South Dakota. Sioux Falls, S. Dak. 
Technology Quarterly, Vol. VII. Boston, Mass. 
Torrey Botanical Club: Bulletin, Vol. XXII, Nos. 1-12. New York. 
United States Geological Survey : Fourteenth Annual Report. Monographs XXII- 
XXIV. Bulletins, Nos. 115-120. Geologic Atlas of the United States: 
Anthracite-Crested Butte folio, Colorado; Chattanooga folio, Tennessee; 
Estill ville folio, Virginia, Kentucky, Tennessee ; Harpers Ferry folio, Mary- 
land, Virginia, West Virginia; Jackson folio, California; Kingston folio, 
Tennessee ; Livingston folio, Montana ; Pikes Peak folio, Colorado ; Placer- 
ville folio, California; Ringgold folio, Tennessee, Georgia; Sacramento 
folio, California; Sewanee folio, Tennessee; Staunton folio, Virginia, West 
Virginia. Washington, D. C. 
United States National Museum: Proceedings, Vol. XVI; Report for 1892, published 
1893. Washington, D. C. 
University of California, Department of Geology : Bulletin, Vol. I, Nos. 1-8. 
Berkeley, Cal. 
University of Wisconsin: Science Series, Vol. I, Nos. 1-2. Madison, Wis. 
Zeitschrift der deutschen geologischen Gesellschaft, Band XLVI, Hefte 1-3. Berlin, 
Germany. 
