57 
201 Hovey (E. O.). A study of the cherts of Missouri. 
Am. Jour. Sci., 3d ser., vol. xlviii, pp. 401-409. 
Abstracts: Jour, of Geol., vol. ii, p. 756 (4 p.); Am. Geol., vol. xiv, 
p. 196 (i p.). 
Describes the petrographic and chemical characteristics of the 
cherts and discusses their origin. 
292 Note ou the petrography of certain basaltic bowlders from 
Thetford, Vt. 
N. Y. Acad. Sci., Trans., vol. xiii, pp. 161-161. 
Gives a chemical analysis of the material and describes the petro- 
graphic characters. 
292a Howe (W. T. H.), Penfield (S. L.) and. On the chemical coin- 
position of chondrodite, huinite, and clinohuinite. 
Am. Jour. Sci., 3d ser., vol. xlvii, pp. 188-206. 
See Penfield (S. L.) and Howe (W. T. H.), No. 417. 
293 Howell (Edwin E.). Beaver Creek meteorite. 
Am. Jour. Sci., 3d ser., vol. xlvii, pp. 430-435. 
Describes the locality and finding of this meteorite and includes a 
discussion of its chemical composition by W. F. Hillebrand and of its 
microscopic characters by G. P. Merrill. 
294 Howorth (Henry). [Mammoth remains of Canada and Alaska.] 
Geol. Soc. London, Quart. Jour., vol. 1, pp. 8-9. 
In discussion of paper by G. M. Dawson on " Notes on the occurrence 
of mammoth remains in the Yukon district of Canada and Alaska." 
295 Hubbard (Lucius L.). Macroscopic minerals of Michigan. 
Michigan, Rept. of the State Board of Geol. Surv. for 1891 and 1892, 
pp. 174-176. 
Gives a list of macroscopic minerals found in Michigan. 
290 Hughes (T. McKenny). [Correlation of clastic rocks.] 
Int. Cong. Geol., Compte Rendu, 5th session, p. 59 (} p.). 
Remarks on the complexity of the data to be considered in the cor- 
relation of rocks. 
297 [Classification of Pleistocene deposits.] 
Int. Cong. Geol., Compte Rendu, 5th session, pp. 194-195. 
Remarks on the possibility of chronologic and genetic classifications. 
298 Note on Walnut Canyon and its cliff dwellings. 
Int. Cong. Geol., Compte Rendu, 5th session, pp. 475-476. 
Describes the Carboniferous section exposed in this canyon. 
299 Hull (Edward). [Mammoth remains of Canada and Alaska.] 
Geol. Soc. London, Quart. Jour., vol. 1, p. 9 (i p.). 
In discussion of paper by G. M. Dawson, "Notes on the occurrence 
of mammoth remains in the Yukon district of Canada and Alaska.'' 
300 [Origin of the novaculites of Arkansas.] 
Geol. Soc. London, Quart. Jour., vol. 1, p. 392 (| p.). 
In discussion of paper by F. Rutleyon the " Origin of certain novacu- 
lites and quartzites." 
