294 KANSAS ACADE3IY OF SCIENCE. 



George L. Cannon, jr.; pp. 30S-315. A Boulder county mine, by John F. Parish, 

 pp. 316-322. Columbite and Tantalite from the Blaclt Hills of South Dakota, 

 by Dr. W. P. Headden; pp. 323-350. The Quartz Porphyry of Flagstaff Hill, 

 Boulder county, Colorado, by Chas. S. Palmer and Henry Fulton, pp. 3.51-359. 

 Orographic and structural features of Rocky Mountain geology, by R. C. 

 Hills (Address of the retiring President), pp. 359-45S. 



Vol. IV ,1891, 1892, 1893, 486 pp. Artesian wells of Denver, by P. H. 

 van Diest, pp. 1-6. Classification of the Huerfano Eocene, by R. C. Hills, 

 pp. 7-9. Separation of manganese in the volumetric determination of zinc, by 

 J. Dawson Hawkins, pp. 10-13. Types of past eruptions in the Rocky JNIoun- 

 tains, by R. C. Hills, pp. 14-32. Nature of the Chemical Elements, by Charles 

 Skeele Palmer, pp. 33-74; 165-173; 355-364. Formation of alloys of tin and iron, 

 by T\^m. P. Headden, pp. 81-122. Present limitations of electric power in 

 mining, by Irving Hale, pp. 123-150. Ore-deposits of Newman Hill, Colo., 

 pp. 1.51-164; map. Technical determination of zinc, pp. 176-191. Post-Laramie 

 beds of Middle Park, Colo., by Whitman Cross, pp. 192-214. Volumetric metliod 

 for the determination of lead, by F. C. Knight, pp. 215-223. Geology of Palmer 

 lake, Denver, etc., by Geo. L. Cannon, jr., pp. 224-270; map. Production of 

 columbous and tungstous oxides in forming compounds of iron and tin, by 

 Wm. P. Headden, pp. 271-293. Latest method of electric car control, by 

 Irving Hale, pp. 294-303; map. Review of tlie Russell process, by L. D. God- 

 shall, pp. 306-322. Certain dissimilar occurrences of gold-bearing quartz, by 

 T. A. Rickard, pp. 323-339; map. Evidence bearing on the formation of ore de- 

 posits by lateral-secretion, by P. H. van Diest, pp. 340-354. Solution of the equa- 

 tions, X- + ji = 7, .r + .(/- = 11, by Franci-s T. Freelaud, pp. :WT-:^72, with diMijram. Nickel: 

 Historical sketch, by W. L. Austin, Ph. D., pp. 373-394. Nickel: Occurrence, 

 geological distribution, and genesis of its ore deposits, by Philip Argall, pp. 

 395-421; 8 figs. Question of a standard of value, by O. J. Frost, pp. 423-447. 



Mode of occurrence of gold in the ores of the Cripple Creek district, by 

 Dr. Richard Pearce, 16 pp. ; 1 pi. 



Sanitary chemical character of some of the wells of Denver, by Prof. C. 

 Strong, 9 pp. 



Geology of the Cripple Creek gold mining district, Colorado, by Whitman 

 Cross, and Ore Deposits of Cripple 'Creek, by R. H. F. Penrose, jr., 37 pp. 



Ore Deposits of Camp Floyd district, Tooele county, Utah, by R. C. Hills, 

 12 pp. ; 2 figs. 



A suspected new mineral from Cripple Creek, by F. C. Knight, 6 pp. 



Notes on the geology of the western slope of tlie Sangre de Cristo Range in 

 Costillo county, Colorado, by E. C. and P. H. van Diest, 5 pp.; 2 sketch maps. 



DISTRICT OF COLUMBIA. 



WASHINGTON.— Biological Society of Washington: 



Proceedings, Vol. VIII, 1893; 151 pp.; 13 pll. A jumping mouse (Zapus in- 

 signis Miller) new to the United States, by Gerrit S. Miller, jr., April 22, 1893; 

 8 pp. Paleontology of the Cretaceous formations of Texas: The invertebrate 

 paleontology of the Trinity division, by Robert T. Hill, June 3, 1893; 9-40; pll. 

 I-VIII. Description of a new white-footed inouse from the Eastern United 

 States, by Gerrit S. Miller, jr., June 30, 1893; pp. 55-70. Development of the 

 brachial supports in Dielasma and Zygospira, by Charles B. Beecher and 

 Charles Schuchert; and On the development of the shell of Zygospira re- 

 curvirostra, by Charles Schuchert, July 13, 1893; pp. 71-82; pll. X, XL Re- 

 discovery of The Mexican Kangaroo rat (Dij^odomys phillipsi Gray), by Hart 

 Merriam, with field-notes by E. W. Nelson, July 18, 1893: pp. 83-96. Paleon- 

 tology of the Cretaceous formations of Texas and the invertebrate fossils 

 of the Caprina limestone beds, by Robert T. Hill, July 20, 1893; pp. 97-108; pll. 

 XII, XIII. Two new wood rats from the Plateau region of Arizona (Nectoma 

 pinetorum and N. arizonae), with remarks on the validity of the genus Te- 

 onoma of Gray, by C. Hart Merriam, M. D., July 31, 1893; pp. 109-112. Notes 

 on Thomomys Bulbivorus, by Gerrit S. Miller, Jr., August 16, 1893; pp. 113-116. 

 Description of a new species of Lagomys from Alaska, by E. W. Nelson, De- 

 cember 21, 1893; pp. 14^7-120. Juncus marginatus and its varieties, by Frederick 

 Vernon Coville, December 21, 1893; pp. 121-128. Descriptions of eight new 

 ground squirrels of the genera Spermophilus and Tamias from California, 

 Texas, and Mexico, by C. Hart Merriam, M. D., December 28, 1S93; pp. 129-138. 

 Description of a new species of Arvicola, of the Mynomes group, from 



