28 BIBLIOGRAPHY AND INDEX OF N. A. GEOLOGY, [bull. 149. 
126 Claypole (E. W.). The timepiece of geology. 
Am. Geol., vol. xvii, pp. 40-45, 1896. 
Discusses the relations of paleontologic and stratigraphic evidence in 
geologic science. 
127 A new Titanichthys. 
Am. Geol., vol. xvii, pp. 166-169, pi. x, 1896. 
Describes and figures Titanichthys brevis n. sp. 
128 The ancestry of the Upper Devonian placoderms of Ohio. 
Am. Geol., vol. xvii, pp. 349-360, 1896. 
Gives a list of the genera and a number of species of placoderms occur- 
ring in the Cleveland (Devonian) shale of Ohio and compares them with 
European fish faunas and gives their vertical distribution. 
129 Dinichthys prentis-clarki. 
Am. Geol., vol. xviii, pp. 199-201, pi. vii, 1896. 
Describes this species. 
130 Clements (J. Morgan). Notes on the microscopical character of 
certain rocks from northeast Alabama. 
Ala. Geol. Surv , Bull. No. 5, pp. 133-176, 1896. 
Describes the petrographic characters of the rocks collected. 
131 Codington (E. W.). The Florida pebble phosphates. 
Am. Inst. Mg. Engrs., Trans., vol. xxv, pp. 423-431, 1896. 
Gives a brief discussion of the origin of the pebble phosphate and a 
description of the methods of mining. 
132 Coldwell (A. E.). Notes on the superficial geology of Kings 
County, N. S. 
N. S. Inst. Sci., Proc, and Trans., 2d ser., vol. ii, pp. 171-174, 1896. 
Describes the distribution of the Triassic trap, Cambrian and Glacial 
deposits. 
133 Coleman (A. P.). Anorthosites of the Rainy Lake region [Ontario]. 
Jour, of Geol., vol. iv, pp. 907-911, 1896. 
Describes their geographic distribution in the region and their petro- 
graphic and chemical characters. 
134 Cooper (W. F.). The Paleozoic formation. 
Denison Univ., Sci. Lab., Bull., vol. ix, pp. 1-10, 1895. 
Describes the general characters and distribution of the Paleozoic rocks. 
135 Cope (E. D.). Sixth contribution to the knowledge of the marine 
Miocene fauna of North America. 
Am. Phil. Soc, Proc, vol. xxxv, pp. 139-146, pis. xi-xii, 1896. 
Describes several new species. 
136 New and little known Mammalia from the Port Kennedy bone 
deposit [Pennsylvania]. 
Phil. Acad. Nat. Sci., Proc, 1896, pp. 378-394, 1896. 
Describes material from the locality named, including several new 
species of mammals. 
