20 BIBLIOGRAPHY AND INDEX OF N. A. GEOLOGY, [bull. 149. 
46 Beadle (H. M.). British Columbia mines. 
Eng. and Mg. Jour., vol. lxii, pp. 174-176, 1896. 
Describes the gold ore bodies of Trail Creek region. British Columbia. 
47 Becker (George F.). Schistosity and slaty cleavage. 
Jour, of Geol., vol. iv. pp. 429-448, figs. 1-5, 1896. 
This paper is a continuation of the discussion iu a former paper on 
" Finite homogeneous strain, flow and rupture of rocks." Discusses the 
structure developed by the deformation of a "solid, homogeneous, vis- 
cous, isotropic, not infinitely brittle mass." 
48 Beecher (Charles E.). The morphology of Triarthrus. 
Am. Jour. Sci., 4th ser., vol. i, pp. 251-256, pi. viii; Geol.' Mag., dec. 
4, vol. iii, pp. 193-200, pi. ix, 1896. 
Gives a summary of present knowledge of the structure of Triarthrus 
and presents a figure showing the natural position of the appendages. 
49 James D wight Dana. 
Am. Geol.. vol. xvii, pp. 1-16, 1896. 
Contains a biography and a list of the publications of Professor Dana. 
50 On a supposed discovery of the antenme of trilobites by Lin- 
meus in 1759. 
Am. Geol., vol. xvii, pp. 303-306, 1896. 
Refers to the literature on the subject and gives a list of references. 
51 — — On the validity of the family Boheinillida 1 Barrande. 
Am. Geol., vol. xvii, pp. 360-362, figs. 1-3, 1896. 
Discusses the characters and synonymy of Bohemilla stupenda. 
52 On the occurrence of Silurian strata in the Big Horn Moun- 
tains, Wyoming, and in the Black Hills, South Dakota. 
Am. Geol., vol. xviii, pp. 31-33, 1896. 
Discusses the occurrence of fossils of Niagara aud Trenton facies and 
remarks on the necessity of a knowledge of the complete faunas for 
purposes of correlation. 
53 Bell (Audrew). Notes on the building stones of eastern Ontario. 
Stone, vol. xii, pp. 565-567, vol. xiii, pp. 24-27, 1896. 
Describes the building stones of the Laurentian, Potsdam, Trenton, and 
Calciferous formations. 
54 Bell (Robert). Proofs of the rising of the land around Hudson Bay. 
Am. Jour. Sci., 4th ser., vol. i, pp. 219-228, 1896. 
Reviews the author's observations in this region, which indicate that 
the country about Hudson Bay is continually rising. 
55 Bennett (John). A geologic section along the Missouri Pacific Bail- 
way, from State Line, Bourbon County, to Yates Center 
[Kansas]. 
Univ. Geol. Surv. of Kans., vol. i, pp. 86-98, pi. iv. fig. 4, 1896. 
Describes the limestones and shales which make up the Carboniferous 
series and mentions their contained fossils. 
