RECENT PUBLICATIONS 769 
—lIowa Academy of Sciences, Proceedings for 1897. Vol. V. Des Moines, 
1898. 
Interglacial Deposits in lowa. A Symposium Presented before the lowa 
Academy of Sciences, December 28,1897. Reprinted from above. 
—MAanson, MARSDEN, C.E., PH.D. The Laws of Climatic Evolution. 
—MULDER, EMILE. Cultivation of Tobacco in Sumatra. U.S. Department 
of Agriculture, Washington, 1898. 
—New South Wales. Department of Mines and Agricultural Geological 
Survey. Annual Report for the Year 1897. Sydney, 1898. 
Mineral Resources No. 3. Notes on Gold Dredging with Reference to the 
Introduction of the Industry into New South Wales. By J. B. JAQUET, 
Geological Surveyor. zd. 
—New York Academy of Sciences, Annals of. Vol. X, Nos. 1-22. October 
1898. Published by the Academy, New York. 
—ORDONEZ, M. EzEQUIEL. Les Volcans Colima et Ceboruco. Mexico, 
1898. 
—PETERSEN, VON JOHANNES. Marekanit-Obsidian aus Nicaragua. Ham- 
burg, July 1808. 
—Pyetrursson, Heer. Geologiske Optegnelser. Kjébenhavn, 1808. 
—READE, T. MELLARD, P.G.S. Geological Observations in Ayrshire. 
Reprinted from the Proceedings of the Liverpool Geological Society, 
1896-7. Liverpool, England. 
High-Level Marine Drift at Colwyn Bay. Quarterly Journal of the Geo- 
logical Society for August 1898, Vol. LIV. 
Post-Glacial Beds Exposed in the Cutting of the New Bruges Canal. /dzd. 
—READE, T. MELLARD and PHILIP HOLLAND, F.I.C. The Phyllades of 
the Ardennes Compared with the Slates of North Wales. Part I. 
—RIcHTER, E. Les Variations Périodiques des Glaciers. Troisiceme Rap- 
port 1897. Extrait des Archives des Sciences, etc., t. VI, 1898. Genéve. 
—Suimek, B. Is the Loess of Aqueous Origin? Reprinted from the Report 
of the lowa Academy of Sciences, 1897. 
—SmiTuH, JAMES PERRIN. The Development of Lytoceras and Phylloceras. 
Proceedings California Academy of Sciences, 3d Series, Vol. eeRartens 
San Francisco, 1808. 
—United States Geological Survey: 
Monographs. Fossil Medusz, Vol. XXX. CHARLES D. WatcottT. Wash- 
ington, 1898. 
Bulletin No. 88. The Cretaceous Foraminifera of New Jersey. BAGG. 
Bulletin No. 89. Some Lava Flows of the Western Slope of the Sierra 
Nevada, California. IRANSOME. 
