670 RECENT P UBLICA TIONS 



— Hillebrand, W. F., and H. N. Stokes. The Relative Values of the 

 Mitscherlich and Hydrofluoric Acid Methods for the Determination of 

 Ferrous Iron. [Reprinted from the Journal of the American Chemical 

 Society, Vol. XXII, No. 10. October igoo.] 



— Hopkins, T. C. Cambro-Silurian Limonite Ores of Pa. Bulletin Geolog- 

 ical Society of America, Vol. XI, pp. 475-502, PI. 50. Rochester, 

 1900. 



— Iowa Geological Survey, Vol. X. Annual Report, 1899. Samuel Calvin, 

 A.M., Ph.D., State Geologist; H. F. Bain, Assistant State Geologist. 

 Des Moines, 1900. 



— Lapparent, A. de. Traite de Geologie ; 3 volumes. Masson et Cie, Paris, 

 1900. 



— New South Wales, Records of the Geological Survey, Vol. VI, Part IV, 

 Department of Mines and Agriculture. Sydney, 1900. 



— New York Academy of Sciences, Annals of. Vol. XII, 1 899-1 900. Edi- 

 tor, Gilbert Van Ingen ; acting editor, Theodore G. White. Published 

 by the Academy. 



— New York, Seventeenth Annal Report of State Geologist, for the year 

 1897. James Hall, State Geologist. New York and Albany, 1899. 



— New York State Museum, Bulletin of. Lower Silurian System of Eastern 

 Montgomery County, New York, by E. R. Cummings. Notes on Strati- 

 graphy of Mohawk Valley and Saratoga County, New York, by Charles 

 S. Prosser, M.S. University of State of New York. Albany, 1900. 



— North American Fauna, No. 19. Results of a Biological Reconnoissance 

 of the Yukon River Region. (U. S. Department of Agriculture, Divis- 

 ion of Biological Survey.) Washington, 1900. 



— Nutttn'g, Charles Cleveland, Professor of Zoology, University of Iowa. 

 American Hydroids. Part I. The Plumularidas. Pis. 34. (Special Bul- 

 letin No. 4, Smithsonian Institution, U. S. National Museum.) Wash- 

 ington, 1900. 



— Ordonez, Ezequiel. Les Volcans du Valle de Santiago. Mexico, 1900. 



— Patton, Horace B. Thomsonite, Mesolite, and Chabazite from Golden, 

 Colorado. Bulletin of the Geological Society of America, Vol. XI, 

 pp. 461-474. Pis. 43-49. Rochester, 1900. 



— Pellat, M- Edm. Excursion a Saint Remy et aux Baux. 



— Purdue, A. H. Demands upon University Curricula. 



— Salomon, Wilhelm, Heidelberg. Bemerkungen zu der Cathrein'schen 

 Arbeit. Dioritische Gang- und Stockgesteine aus dem Pusterthale. 

 Die Krystallformen des Methylathers des Dibrom-p-oxy-Mesitylalkohols 

 und des p-p-Dimethyl-benzoins. 



