RECENE PUBLICALIONS. 
—ADDISON, Wn. L. T., B-A. On Crystal Formation of the Elements and 
their Allotropic Modifications, with a deduction of the Atomic forms 
therefrom. Toronto, Canada, 1808. 
—AIL10, Jutius. Uber Strandbildungen des Litorinameeres auf der Insel 
Mantsinsaari. Bulletin de la Commission de la Finlande. No. 7. 
Helsingfors, April 1898. 
—Batn, H. Foster. Geology of Decatur County. From Iowa Geological 
Survey, Sixth Annual Report, Vol. VIII, 1897. Des Moines, 1808. 
Geology of Plymouth County. dd. 
—CuRTIS, GEO. CARROLL. A Model of Seacoast Characteristics. Journal 
of School Geography, Vol. I, No. 6, June 1880. 
—Davis, W. M. The Equipment of a Geographical Laboratory. Reprinted 
from the Journal of School Geography, Vol. II, No. 5, May 1808. 
Waves and Tides. J/ézd, No. 4, April 1808. 
—Chicago Academy of Sciences. The Mollusca of the Chicago Area. The 
Pelecypoda (Geological Notes). By Frank C. Baker. Bulletin No. III, 
Part I of the Natural History Survey, September 1, 1808. 
—Dersy, O. A. Monazite and Xenotime in European Rocks. Reprinted 
from the Mineralogical Magazine, Vol. XI, No. 53. 
On the Accessory Elements of Itacolumite and the Secondary Enlarge- 
ment of Tourmaline. Am. Jour. Sci., Vol. V, March 1808. 
—FAIRCHILD, HERMAN L. Glacial Geology in America. An Address 
before the Section of Geology and Geography, Amer. Association for 
the Advancement of Science, Boston Meeting, Fiftieth Anniversary, 
August 1898. Salem Press, Salem, Mass. 
—Field Columbian Museum. Publication 28. Vol. II, No. 3. Ruins of 
Xkichmook, Yucatan. By Edward H. Thompson. 
—GEIKIE, JAMES. The Tundras and Steppes of Prehistoric Europe. 
Reprinted from the Scottish Geographical Magazine for June 1808. 
Edinburgh. 
—lowa Geological Survey. Six Annual Report, 1897, Vol. VIII. Samuel 
Calvin, State Geologist, Des Moines, Ia. 
—ORDONEZ, M. EZEQUIEL. Note sur les Gisements d’or du Mexique. 
Mexico, 1898. 
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