UNITED STATES GEOGRAPHICAL AND GEOLOGICAL SURVEY OF THE ROCKY MOUNTAIN REGION. Contributions to North American ethnology, vol. 6. Washington, 1890. 4^o. xviii+794pp. 3.00 CONTENTS. The Cegiha language. By J. O. Dorsey. ---- Contributions to N. American ethnology, vol. 7. Washington, 1892. 4^o. x, 1-665pp. 3.00 H.R. mis. doc. no. 26; 52d Cong., 1st sess. CONTENTS. Dakota-English Dictionary. By S. R. Riggs. Edited by J. O. Dorsey. Washington, 1890. UNITED STATES GEOLOGICAL SURVEY. Tenth annual report of the United States geological survey to the Secretary of the Interior, 1888-'89. By J. W. Powell, director. Part I.--Geology. [Part II.--Irrigation.] Washington, 1890. 2 vols. xv, 1-774: viii, 1-123pp., 98 pls. 3.00 ACCOMPANYING PAPERS. General account of the fresh water morasses of the U.S., with a description of the dismal swamp district of Virginia and North Carolina. By N. S. Shaler. The Penokee iron-bearing series of Michigan and Wisconsin. By R. D. Irving and C. A. Van Hise. The fauna of the lower cambrian olenellus zone. By C. D. Wolcott. ---- Eleventh annual report of the U.S. geological survey to the Secretary of the Interior, 1889-'90. By J. W. Powell, director. Part II, Irrigation. Washington, 1891. xiv, 1-395pp., 30 pls. 1.00 ---- Monographs, vol. xvi. Washington, 1889. 4^o. 340pp., 53 pls. 1.00 CONTENTS. The paleozoic fishes of North America. By J. S. Newbury. ---- Bulletin no. 71. Washington, 1891. 744pp. .50 CONTENTS. Index to the known fossil insects of the world, including myriapods and arachnids, by Samuel Hubbard Scudder. ---- _Same._ No. 72. Washington, 1891. 229pp. .20 CONTENTS. Altitudes between Lake Superior and Rocky mountains, by Warren Upham. ---- _Same._ No. 73. Washington, 1891. xii, 139pp., 6 pls. .15 CONTENTS. The viscosity of solids, by Carl Barus. ---- _Same._ No. 74. Washington, 1891. 119pp. .15 CONTENTS. The minerals of North Carolina, by Fred'k Augustus Georth. ---- _Same._ No. 75. Washington, 1891. 173pp. .15 CONTENTS. Record of North American geology for 1887 to 1889 inclusive, by Nelson Horatio Darton. ---- _Same._ No. 76. Washington, 1891. 393pp. .25 CONTENTS.