ACKNO WLEDGMENTS. 



The following papers have been donated to the library of the Geological Depart- 

 ment of the University of Chicago : 



Abbott, Charles C, M.D. 



— Recent Archteological Explorations in the Valley of the Delaware. 30 pp., i 

 pi. — Publications of the University of Pennsylvania. Series in Philology, Liter- 

 ature and Archfeology, Vol. II, No. i. 

 Adams, Frank D. 



— On Some Granites from British Columbia and the Adjacent Parts of Alaska 

 and the Yukon District. 14 pp., 111. — Canadian Record of Science, Sept. i8gi. 



— Notes to Accompany a Tabulation of the Igneous Rocks based on the System 

 of Professor H. Rosenbusch. 6 pp., i pi. — Canadian Record of Science, Dec. 

 1891. 



— On the Geology of the St. Clair Tunnel. 8 pp.. i pi. — Trans. Roy. Soc. Can- 

 ada, Section IV, 1891. 



— On the Presence of Chlorine in Scapolites. 5 pp. — Am. Jour. Science, Apr. 



1879. 



— Notes on the Lithological Character of some of the Rocks Collected in the 

 Yukon District and Adjacent Northern Portion of British Columbia. 6 pp. — 

 Annual Report, Geol. Sur. of Canada, 1887. 



— On Some Canadian Rocks Containing Scapolite, with a Few Notes on Some 

 Rocks Associated with the Apatite Deposits. 16 pp. — Canadian Record of 

 Science, Oct. 1888. 



— On the Microscopical Character of the Ore of the Treadwell Mines, Alaska. 

 5 pp., 111. — Read before the Royal Soc. Canada, May, 1889. 



— On a Melilite - Bearing Rock (Alnoite) from Ste. Anne de Bellevue, near 

 Montreal, Canada. 10 pp. ^111. — Am. Jour. Sci., Vol. XLIII, Apr. 1892. 

 Ami, Henry M., M.A.,F.G.S. 



— The Utica Terrane in Canada. 32 pp. — Canadian Record of Science, Oct. 

 • 1892. 



—^Additional Notes on the Geology and Palaeontology of Ottawa and its Envi- 

 rons, II pp. — Ottawa Naturalist, Sept. 1892. 



— Catalogue of Silurian Fossils from Arisaig, Nova Scotia. 7 pp. — From the 

 Nova Scotian Inst, of Sci., Ser. 2, Vol. I, 1892. 

 Andreae, a. 



— Ueber die Nachahmung verschiedener Geysirtypen und iiber Gasgeysire. 6 

 pp. — Gesanimt-Sitzung vom 13 Jan. 1893. 

 Bayley, W. S. 



— A Summary of Progress in Mineralogy and Petrography in 1892. — American 

 Naturalist. 

 Becker, GeoxGe-F. 



— Finite Homogeneous Strain, Flow and Rupture of Rocks. 77 pp. Bull. Geol. 

 Soc. Am., Jan. 1893. 

 Beecher, C. E. 



— Notice of a NewLower Oriskany Fauna in Columbia Co., N. Y. 4 pp. — 

 Am. Jour. Sci., Vol. XLIV, Nov. 1892. 

 Branner, J. C. 



— Annual Reports of the Arkansas Geological Survey, 1888, Vols, i, 2, 3, 4 ; 

 1889, Vol. 2 ; 1890, Vols. 2 and 3. 



423 



