weeks.] PALEONTOLOGY, PETROLOGY, AND MINERALOGY, 1895. 45 
211 Hill (Robert T.). On outlying' areas of the Comanche series in 
Kansas, Oklahoma, and New Mexico. 
Am. Jour. Sci., 3d ser., vol. 1, pp. 205-234. 
Reviews the previous descriptions of the Cretaceous series in this 
region. Gives the section at Black Hills, Comanche County, Kans., and 
that near Belvidere. Reviews the descriptions of these sections hy Pro- 
fessor Cragin. Includes notes on the fossil plants hy F. H. Knowlton 
and on the fossil Mollusca by T. W. Stanton. Compares the fauna of 
these beds with that of the Comanche series in Texas. Considers that 
these outlying beds represent the attenuated northern extension of the 
Washita and probably a portion of the Fredericksburg division of the 
Texas Comanche series. 
212 The radiolarian earths of Cuba. 
Science, new ser., vol. i, pp. 628-629. 
Quotes from recent publications on radiolarian earths of the West 
Indian region and describes the determination of the radiolarian re- 
mains and their geologic age. 
213 Hill (Walter Hovey). The Dead wood placer claims, Idaho. 
Eng. and Mg. Jour., vol. lx, pp. 225-226. 
Describes the character of these placer deposits. 
214 The gold belt of Idaho. 
Eng. and Mg. Jour., vol. lx, p. 172. 
Gives a historical sketch of gold mining in Idaho and a brief descrip- 
tion of the mining districts. 
215 Hillebrand (W.F.). Calaverite from Cripple Creek, Colorado. 
Am. Jour. Sci., 3d ser., vol. 1, pp. 128-131 and 426. 
Gives a chemical analysis of material from the Cripple Creek mines, 
which shows the presence of calaverite. Includes crystallographic notes 
by S. L. Penfield. 
21C Chemical composition of calaverite from Cripple Creek, Colo- 
rado. 
U. S. Geol. Surv., 16th Ann. Rept., part ii, pp. 133-135. 
Describes the occurrence of the mineral and its chemical composition. 
217 Hitchcock (C. H.). Divisions of the ice age in the United States 
and Canada. 
Am. Geol., vol. xv, pp. 330-335 (correspondence). 
Discusses the evidences of maximum glaciation during Lafayette 
time. Reviews recent literaturo on the unity of the Glacial epoch and 
discusses the evidences thus presented. 
218 The Connecticut sandstone group. 
Science, new ser., vol. i, pp. 74-77. 
Gives a historical account of the use of the term "Connecticut" or 
" Connecticut sandstone group " to designate the Triassic areas of eastern 
North America. 
219 High-level gravels in New England. 
Abstract: Geol. Soc. Am., Bull., vol. vi, p. 460 (.1 p.). 
Describes beach lines in the basin of Lako Mem phrem agog and adja* 
cent region, which indicate the existence of glacial lakes. 
