ACKNOWLEDGMENTS. 427 



Hatcher, J. B. — Continued. 



— The Ceratops Beds of Converse County, Wyoming. 10 pp. — Am. Jour. Sci. 

 Feb. 1893. 

 Hay, O. p., Ph.D. 



— The Northern Limits of the Mesozoic Rocks in Arkansas. 30 pp. — Annual 

 Report Geol. Surv. Ark. 1888. 

 HOBBS, Wm. H. 



— Secondary Banding in Gneiss. 6 pp. i pi.. 111. — Bull. Geol. Soc. Am., 1891. 

 — Notes on a Trip to the Lipari Islands. 12 pp. i pi., 111. — Wis. Acad. Sci., 1892. 

 — On Intergrowths of Hornblende with Augite in Crystalline Rocks, i p. — 

 Science, Dec. 23, 1892. 



— Phases in the Metamorphism of the Schists of Southern Berkshire. 12 pp. 



1 pi.. 111.— Bull. Geol. Soc. Am., Feb. 1893. 

 Holmes, W. H. 



— Geology of the Elk Mountains, Col. (1874.) 



— Geology of Southv/estern Colorado. (1875.) 



— Geology of the Yellowstone Park. (1880.) 

 HOLST, N. O. 



Matricit och Marmairolit, tvaenne nya Mineralier fran Vermland. 5 pp. — 

 Aftryck ur Geologiska Foreningens i Stockholm Forhandlingar, 1875. 



— Om de glaciala rullstensasarne. i6 pp. — Ibid., 1876. 



— Klotdiorit fran Slattmossa, Jareda socken, Kalmar Ian. 10 pp. i pi. — Ibid, 

 Bd. VII. 



— Om Ett Fynd af Uroxe i Rakneby, Ryssby Sockenk Kalmar Ian. 21 pp* 



2 pi.— Ibid., Bd. X, 1888. 



— Hvem fann den norrlandska andesiten? 6 pp. Ibid. — Bd. X, 1888. 



— Om en Maktig qvarsit, yngre an olenus-skiffer. 3 pp. — Ibid. Bd. XI, 1889. 



— Om en nyupptackt fauna i block af kambrisk sandsten, insamlade af dr 

 N. O. Hoist af Joh. Chr. Moberg. 18 pp. i pL— Ibid., Bd. XIV, 1892. 



— Bidrag till Kannedomen om Lagerfoldjen inom den Kambriska Sandstenen. 

 17 pp. 



— Ryoliten vid Sjoen Mien. 52 pp. i pi.. 111. 



— Berattelse om en ar 1880, i Geologiskt Syfte Foretagen Resa Till Greenland. 

 74 pp. I map, 1880. 

 HovEY, Edmund Otis. 



— Observations on some of the Trap Ridges of the East - Haven — Branford, 

 (Ct.) Region. 23 pp. i pi. — Am. Jour. Sci., Nov. 1889. 

 Hyatt, Alpheus. 



— Remarks on the Pinnidae. 12 pp. 



— Jura and Trias at Taylorville, California. 18 pp. — Bull. Geol. Soc. Am., 

 Vol. HI, 1892. 

 Iddings, J. P. 



— Obsidian Cliff Yellowstone National Park. 48 pp, 9 pi., 1888. 7th Annual 

 Rept. U. S. G. S. 



— On the Crystallization of Igneous Rocks. 50 pp. — Phil. Soc. Washington, 

 Vol. XI, 1889. 



— On a Group of Volcanic Rocks from the Tewan Mountains, New Mexico, 

 and on the Occurrence of Primary Quartz in certain Basalts. 32 pp. — Bull. 

 U. S. G. S., No. 66. 



— Spherulitic Crystallization. 18 pp. 2 pi. — Bull. Phil. Soc. Washington, 

 Vol. XI, 1 89 1. 



— The Origin of Igneous Rocks. 124 pp. i pi. — Bull. Phil. Soc. Washington, 

 Vol. XII, May, 1892. 

 James, Jos. Y. 



— Manual of the Paleontology of the Cincinnati Group. 16 pp., 111. — Cincin- 

 nati Soc. Nat. Hist., Oct. 1892, Jan. 1893. 

 JiMBO, K. 



— General Geological Sketch of Hokkaido, with special reference to the 

 Petrography. 



