334 ^^f^^ American Geologist. May, 1899 
Turner, H. W. 
Some rock-forming biotites and amphiboles. (Am. Jour. Sci., ser. 
4. vol. 7, pp. 294-298, Apr. 1899.) 
Washington, H. S. 
The petrographical province of Essex county, Mass. III. (Jour. 
Geol.. vol. 7, pp. 105-121, Feb.-Mch. 1899.) 
Weeks, F. B. 
The duplication of geologic formation names. (Science, new ser.. 
vol. 9, pp. 490-491, Mch. 31, 1899. Amer. Geol., vol. 2}), pp. 2(£-267. 
Apr. 1899.) 
Weidman, Samuel. 
A contribution to the geology of the pre-Cambrian igneous rocks 
of the Fox River valley. Wisconsin. (A thesis submitted for the de- 
gree of Doctor of Philosophy, University of Wisconsin, 1898. 63 pp., 
10 pis.; Madison, 1898. Reprint of Wis. Geol. and Nat. Hist. Survey, 
Bull. no. Ill, science ser. no. 2.) 
Wieland, G. R. 
A study of some American fossil cycads. Part. II. The leaf 
structure of Cycadeoidea. (Am. Jour. Sci., ser. 4, vol. 7, pp. 305-308, 
pi. 7, Apr. 1899.) 
Winchell, N. H. 
The optical characters of jacksonite. (Am. Geol., vol. 22,, pp. 
250-251 Apr. 1899.) 
Wolff, J. E. 
On hardystonite, a new calcium-zinc silicate from Franklin Fur- 
nace, New Jersey. (Proc. Am. Acad. Arts and Sci., vol. 34, no. 18, 
pp. 477-481. Apr. 1899.) 
Woodman, J. E. 
Geology: north shore [near Boston. Mass.]. (Guide to localities 
illustrating the geology, etc.. of the vicinity of Boston, pp. 9-20. A. A. 
A. S., 50th anniversary meeting, Boston, August, 1898.) 
Woodman, J. E. 
Studies in the gold-bearing slates of Nova Scotia. (Proc. Boston 
Soc. Nat. Hist., vol. 28, no. 15, pp. 375-407, 3 pis, Mch. 1899.) 
Woodman, J. E. 
Ore-bearing schists of middle and northern Cape Breton. (39 pp.; 
reprinted from Rept. Dept. of Mines, Nova Scotia, for year ending 
Sept. 30, 1898; Halifax, Alch. 1899.) 
Wright, G. F. 
The truth about the Nampa figurine. (Am. Geol., vol. 23, pp. 
267-272, Apr. 1899.) 
