58 BIBLIOGRAPHY AND INDEX OF N. A. GEOLOGY, [bull.135. 
301 Huntington (Oliver Whipple). Further observations upon the 
occurrence of diamonds in meteorites. 
Am. Acad. Arts Sci., Proc, vol. xxix, pp. 204-211. 
Abstract: Am. Geol., vol. xiii, pp. 284-285 (4 p.). 
Gives an account of the experiments employed in determining the 
presence of diamonds in the Canyon Diablo meteorite. 
302 — — The Smithville meteoric iron. 
Am. Acad. Arts Sci., Proc, vol. xxix, pp. 251-260, figs. 1-2. 
Gives a chemical analysis of the material and an account of the 
finding of other meteoric iron masses in this portion of Tennessee, and 
the evidences indicating that they possess common characteristics 
and may have formed originally a part of the same mass. 
'302a Kunz (George F.) and. The diamond in the Canyon Diablo 
meteoric iron. 
Abstract: Eng. and Mg. Jour., vol. lvii, p. 394. 
Noticed in Bibliography and Index for 1892 and 1893. 
303 Hurlburt (E. B.). On alunite from Red Mountain, Ouray County, 
Colo. 
Am. Jour. Sci., 3d ser., vol. xlviii, pp. 130-131. 
Describes the chemical and crystallographic characters of alunite 
from Colorado. 
304 Hyatt (Alpheus). Trias and Jura in the Western States. 
Geol. Soc. Am., Bull., vol. v, pp. 395-434. 
Abstracts: Am. Jour. Sci., 3d ser., vol. xlvii, pp. 142-143; Am. Geol., 
vol. xiii, p. 148 (f p.). 
Discusses the age and faunal relations of the American and Sailors 
canyons deposits, California, and describes the fauna of the Upper 
Jura of California. Discusses the relative age of the rocks ancE 
describes the characters of fossils from different localities. 
305 Phylogeny of an acquired characteristic. 
Am. Phil. Soc, Proc, vol. xxxii, pp. 349-640, pis. 1-14. 
Describes the evidences which show that the tendency of shells 
toward becoming arcuate and coiled is general in the descendants of 
straight shells and not confined to any special series or time. Describes 
genera and species of Nautiloidea. 
I. 
305*7 Iddings (Joseph P.). The eruptive rocks of Electric Peak and 
Sepulchre Mountain, Yellowstone National Park. 
Abstract: Am. Geol., vol. xiv, pp. 117-118. 
Noticed in Bibliography and Index for 1892 and 1893. 
3057; Genetic relationships among igneous rocks. 
Abstracts: Am. Nat., vol. xxviii, p. 515 (ip.)| Am. Geol., vol. xiii, 
p. 195 (101). 
Noticed in Bibliography and Index for 1892 and 1893. 
305c A dissected volcano. 
Abstract: Am. Nat., vol. xxviii, p. 603 (^ p.). 
Noticed in Bibliography and Index for 1892 and 1893. 
