weeks] PALEONTOLOGY, PETROLOGY, AND MINERALOGY, 1901. 93 
849 Winchell (Newton H.). The Archean of the Alps. 
Am.GeoL, vol. 28, pp. 189-200, 1901. 
Reviews paper by Duparc and Mrazec. 
850 Edward Waller Claypole. 
Am. Geol., vol. 28, pp. 247-248, 1901. 
Gives a sketch of the life of Prof. Claypole. 
851 The origin of Australian iron ores. 
Am. Geol., vol., 18, pp. 248-250, 1901. 
Reviews paper by J. B. Jaquet on "The iron-ore deposits of New 
South Wales," and compares them with certain deposits in the State of 
Washington. 
852 [Reviews of " Geology and water resources of Nez Perce 
County, Idaho" by I. C. Russel; " Contributions to miner- 
alogy and petrography," edited by S. L. Penfieldand L. V. 
Pirsson ; ' ; Preliminary report on the copper-bearing rocks 
of Douglas County, Wisconsin, containing a preliminary 
report on the copper-bearing rocks of parts of Washburn 
and Bayfield Counties," 2d edition, by U. S. Grant; and 
"An investigation of the buried valley of Wyoming" by 
William Griffith.] 
Am. Geol., vol. 28, pp. 319-324, 1901. 
853 Fundamental changes in the Archean and Algonkian, as 
understood by Prof. Van Hise, of the United States Geo- 
logical Survey. 
Am. Geol., vol. 28, pp. 385-388, 1901. 
Reviews a recent paper by Prof. Van Hise. 
854 Withrow (James R.), Hamilton (S. Harbert) and. The progress 
of mineralogy in 1899, an analytical catalogue of the con- 
tributions to science during the year. 
See Hamilton (S. H.) and Withrow (J. R.), 337. 
855 Wood (Elvira). Marcellus (Stafford) limestones of Lancaster, 
Erie County, N. Y. 
N. Y. State Mus., Bull. No. 49, pp. 139-181, fig. 1, pi. 9, 1901. 
Describes their stratigraphic relations and lithologic and faunal 
characters. 
856 A new crinoid from the Hamilton of Charlestown, Indiana. 
Am. Jour. Sci., 4th ser., vol. 12, pp. 297-300, pi. v, fig. 1, 1901. 
Describes Gemnnseocrinus carinatus n. sp. 
857 Woodworth (Jay Backus). Original micaceous cross-banding 
of strata by current action. 
Am. Geol., vol. 27, pp. 281-283, figs. 1-2, 1901. 
Describes the phenomena occurring in glacial sand of Massachusetts 
and refers to descriptions of somewhat similar occurrences. 
