Correspondence. 1 33 
Tyrell, J. B. 
Report on the Doobaunt, Kazan and Ferguson Rivers and the north- 
west coast of Hudson bay and on two overland routes from Hudson 
bay to lake Winnipeg. (Geol. Surv. Canada, Ann. Rept., vol. 9 [1896]. 
pt. F, 218 pp., II pis., 3 maps, 1897.) 
Wadsworth, M. E. 
Zirkelite — a question of priority. (Science, n. ser., vol. 7, p. 30, Jan. 
7, 1898.) 
Walcott, C. D. 
Cambrian Brachiopoda: Genera Iphidea and Yorkia, with descrip- 
tions of new species of each, and of the genus Acrothele. (U. S. Nat. 
Museum, Proc, vol. 19, no. 1120, pp. 707-718, pis. 59-60, 1897. Extras 
issued Aug. 27', 1897.) 
Weller, Stuart. 
Cryptodiscus, Hall. (Jour. Geol., vol. 5, pp. 803-808, Nov.-Dec. 
1897.) 
White, I. C. 
The Pittsburg coal bed. (Am. Geol., vol. 21, pp. 49-60, Jan. 1898.) 
White, T. G. 
A contribution to the petrography of the Boston basin. (Boston 
Soc. Nat. Hist., troc, vol. -22), no. 6, pp, 1 17-156, pis. 1-5, Dec. 1897.) 
Whitfield, R. P. 
Observations on the genus Barrettia, Woodward, with descriptions 
of two new species. (Am. Mus. Nat. Hist, Bull., vol. 9, pp. 233-246, 
pis. 27-38, Nov. 19, 1898-) 
Wieland, G. R. 
The protostegan plastron. (Am. Jour. Sci., ser, 4, vol. S, PP. 15-20 
pi. 2, Jan. 1898.) 
Winchell,N. H. 
Determination of the feldspars. (Am, GeoL, vol. 21, pp. 12-49, pls. 
_-8, Jan. 1898,) 
CORRESPONDENCE. 
Zirkelyte: A Question of Priority. In the Miiiera- 
logical Magazine, volume XI, pp. 86-88 (read June 18th, 1895 ( 
is described a new mineral containing zirconium, titanium, lime, iron, 
etc., under the name of zirkelite. This paper was prepared by my 
friend, Dr. E. Hussak, and by Mr. G. T. Prior. 
Later, Mr. Prior (1. c. pp. 180-183, read Nov. 17, 1896) published 
an analysis of the same mineral. 
I wish to protest against the use of the name zirkelite for this 
mineral on the ground of the prior use of it to designate a commonly 
occurring rock belonging to the basaltic family. 
When two subjects are so intimately connected as mineralogy and 
petrography, it does not seem to be for the interest of science that 
