Authors' Catalogue. 327 
Weller, Stuart 
A preliminary report on the stratigrapliic paleontology of Walpack 
ridge, in Sussex county. New Jersey (Geol. Sur. New Jersey, Ann. 
Rep. of the state Geologist for 1899. 46 pp. Trenton, igoo.) 
Weller, Stuart 
The paleontology of the Niagara limestone in the Chicago area. 
The Crinoidea. (Bull. 4, part i, of Nat. Hist. Sur., Chicago Academy 
of Sciences. June 2y, 1900. pp. 153, 15 plates.) 
White, David 
The stratigraphic sncce=sion of the fossil floras of the Pottsville 
formation in the southern anthracite coal field. Pennsylvania. (20th 
An. Rep. U. S. G. S., Part 2. pp. 751-918. pis. 180-193, 1900.) 
Wilder, Frank A. 
Geology of Lyon and Siou.x counties (Iowa). 'Geol. Sur. Iowa, 
vol. ic. pp. 85-157, 190C. 
Williams, I. A. 
Geology of Worth county. (Geol. Sur. Iowa, vol. 10. pp. 315-317. 
1900. 
Wlnchell, A. N. 
Mineralogical and petrographic study of the gabbroid rocks of 
Minnesota, and more particularly of the plagioclasytes (II). (Am, 
Geol., vol. 26, pp. 197-245, plate 20, October, igoo.) 
Winchell, N. H. (assisted by U. S. Grant) 
The Geology of Minnesota, volume v of the final report, Geol. 
Nat. Hist. Survey. Quarto, pp. xxvii and 1027. Six plates. St Paul. 
1900. 
Winchell, N. H. 
Structural geology [Archean and Taconic of Minnesota] (Final 
report. Minn., Geol. Nat. Hist. Sun, vol. 5, pp. 1-74. 190a.) 
Winchell, N. H. (and U. S. Grants 
Petrographic geology of the crystalline rocks of Minnesota. 
(Final Report. Geol. Nat. Hist. Sur. Minn., vol. 5, pp. 75-936, 1900.) 
Winchell, N. H. 
Mineralogy and petrology of Minnesota. (Final Rep. Geol. Nat. 
Hist. Sur. Minn., vol. 5 pp. 937-999. 1900.) 
Winchell, N. H. 
[Appendices to| Geology and petrology of Minnesota. (Final 
Report. Geol. Nat. Hist. Sur. Minn., vol. 5, pp. 1000-1006. 1900.) 
PERSONAL AND SCIENTIFIC NEWS. 
Dr. Heinrich RiEs, of Cornell University has recently re- 
turned from Europe where he spent four months, attending 
the Geological Congress, and also visiting many mining re- 
gions in Spain, France, Germany, and the Balkan countries. 
