A REFERENCE LIST OF SUMMARIES 809 
VAN HIsE, C. R., with BAYLEY and SMYTH. 
The Marquette iron-bearing series of Michigan. (Mon. U.S. Geol. Surv., 
no. 28, 1896, pp. 608. With geol. atlas of 39 plates.) Summarized 
Journ. of Geol., vol. 6, p. 739. 
WADSWORTH, M. E. 
On subdivisions of the Azoic or Archean in northern Michigan. (Am. 
Journ. of Sci., 3d ser., vol. 45, 1893, pp. 72-73.) Summarized Journ. of 
Geol:, vol. 1, p: 533. 
On geology of the iron, gold, and copper districts of Michigan. (Rept. 
State Board Geol. Surv. of Mich., for 1891-2, pp. 75-174. 1893.) 
Summarized Journ. of Geol., vol. 1, p. 534. 
The origin and mode of occurrence of the Lake Superior copper deposits. 
(Trans. Am. Inst. Min. Engineers, vol. 27, 1898, pp. 669-696.) Sum- 
marized Journ. of Geol., vol. 7, p. Igo. 
WALCOLT GC. 1), 
Algonkian rocks of the Grand Canyon of the Colorado. (Journ. of Geol., 
vol. 3, 1895, pp. 312-330. Published also in Fourteenth Ann. Rept. 
U.S. Geol. Surv., for 1892-3, part 2, pp. 487-524. 1895.) Summarized 
journ:ot Geoli vol; 4, p..372: 
WALKER, DE. 
Geological and petrographieal studies of the Sudbury nickel district of 
Canada. (Quart. Journ. Geol. Soc., vol. 53, 1897, pp. 40-66.. With 
geol. map.) Summarized Journ. of Geol., vol. 7, p. 416. 
WEED, W. H.,-and Prrsson, L. V. 
Geology of the Castle Mountain mining district, Montana. (Bull. U.S. 
Geol. Surv., no. 139, 1896, pp. 165. With geol. map.) Summarized 
Journ. of Geol., vol. 6, p. 845. 
The geology of the Little Rocky mountains. (Journ. of Geol., vol. 4, 
1896, pp. 399-428.) Summarized Journ. of Geol., vol. 6, p. 846. 
See Hague. 
WEIDMAN, S. 
On the quartz keratophyre and associated rocks of the north range of the 
Baraboo Bluffs. (Bull. Univ. of Wis., sci. ser., vol. 1, 1895, pp. 35-56.) 
Summarized Journ. of Geol., vol. 4, p. 750. 
A contribution to the geology of the pre-Cambrian rocks of the Fox River 
Valley, Wis. (Bull. Wis. Geol. and Nat. Hist. Surv., no. 3, 1898, pp. 
63.) Summarized Journ. of Geol., vol. 7, p. 704. 
WESTGATE, L. G. 
The age of the crystalline limestones of Warren county, New Jersey. (Am. 
Geol., vol. 14, 1894, pp. 369-379.) Summarized Journ. of Geol., vol. 3, 
Ds 230. 
The geology of the northern part of Jenny Jump Mountain, Warren 
county. (Ann. Rept. Geol. Surv.of N. J., for 1895, pp. 21-61. 1896.) 
Summarized Journ. of Geol., vol. 6, p. 531. 
