tfEEKa.] PALEONTOLOGY, PETROLOGY, AND MINERALOGY, 1898. 47 
328 Hallock (William). Subterranean temperatures at Wheeling, 
West Virginia, and Pittsburg, Pennsylvania. 
School of Mines Quart., vol. xviii, pp. 148-152, 2 figs., 1898. 
Gives tables showing the temperatures at various depths in these 
wells. 
329 [Review of "Artesian wells of Iowa," by W. H, Norton.] 
Science, new ser., vol. vii, p. 499 (| p.), 1898. 
330 Hardman (John E.). The gold fields of Canada. 
Can. Mg. Rev., vol. xvii, pp. 156-163 and 184-190, 1898. 
Describes the occurrence of gold in various provinces of Canada. 
331 Notes on some mining districts in British Columbia.. 
Federated Can. Mg. Inst., Jour., vol. ii, pp. 166-180, 1897. 
Includes notes on the gold and silver ores of the Rossland, Nelson, 
Slocan Lake, and Fort Steele districts. 
332 Hardt (Anton). The Blossburg coal region [Pennsylvania]. 
Mines and Minerals, vol. xix, pp. 126-128, 4 figs., 1898. 
Describes briefly the occurrence of coal in the region. 
333 Harnly (H. J.). " Cone-in-cone" (an impure calcite). 
Kan. Acad. Sci., Trans., vol. xv, p. 22, 1898. 
Describes occurrence of material in Cretaceous rocks of Kansas. 
334 Harris (Gilbert D.). The Lignitic Stage, Part I. Stratigraphy 
and Pelecypoda. 
Am. Pal., Bull., vol. ii, No. 9, pp. 3-102, 15 pis., 1897. 
Reviews descriptions of the stratigraphy in various States and 
includes lists of references to the literature. Describes the Pelecypoda, 
including a number of new species. 
335 Haworth (Erasmus). Stratigraphy of the Kansas Coal Measures. 
Kan. Univ. Geol. Surv., vol. iii, pp. 13-105, pis. i-xxx, figs. 1-3, 1898. 
Describes the distribution and surface features of the Mississippian 
series, the character, occurrence, and distribution of the subdivisions of 
the Coal Measures, the correlation of sections, and comparison with 
Missouri and Iowa Coal Measures. Discusses the nomenclature 
employed. 
336 Annual Bulletin on Mineral Resources of Kansas for 1897. 
Kan. Univ. Geol. Surv., 98 pp., Lawrence, Kans., 1898. 
Contains statistics of production of the various economic products of 
the State, and notes on the occurrence and character of the lead and 
zinc ores, on the chemical and physical properties of Kansas coals, on 
the occurrence and origin of the Kansas oil and gas, on the geologic 
features of the gypsum beds, and on the occurrence of hydraulic cement 
and building stones. 
337 Hay (O. P.). Notes on species of Ichthyodectes, including the 
new species I. cruentus, and on the related and herein estab- 
lished genus Gillicus. 
Am. Jour. Sci., 4th ser., vol. vi, pp. 225-232, figs. 1-5, 1898. 
Reviews previous descriptions and describes a new species and a new 
genus. 
