CON PRANSTES: 
Art. XX.—Distribution and the Secular Variation.of Ter- 
restrial Magnetism, No. Il; by L. A. Batumr.....-- é 
XXI.—Outlying Areas of the Comanche Series in Kansas, 
Oklahoma and New Mexico; by R. T. Hitu._--..2_.- 
XXII.—The Relations of the Diurnal Rise and Fall of the 
Wind in the United States; by F. Wanpo_..___.-._2-- 
XXIII-—Stratigraphy of the Kansas Coal Measures; by 
CORICEYES ©2222... eee rr 
XXIV.—On the so-called Schneebergite; by A. 8. Haxiz 
and .W. .MUTHMAN \..025.0 2-9) 2.2) ee 
XXV.—Native Sulphur in Michigan; by W. H. Suurzmr - 
XXVI.—Double Salts of Cesium Chloride with Chromium 
Trichloride and with Uranyl Chloride; by H. L. big 
and B.B.Bourwoop 2°... 2.252225 te 
XX VIIL—On two new Meteorites ; by E. K. fiovwane (With 
Plate IV). 222i... 0 
952 |. 
7) 
XXVII.—The Reduction of the Acids of Selenium by 
Hydriodic Acid; by F. A. Goocu and W. G. Rrynorps 
SCIENTIFIC INTELLIGENCE, 
254 | 
Chemistry and Physics—Helium, a constituent of certain Minerals, W. RAMSAY, 
J. N. Cottip and M. Travers, 259.—Argon and Helium in Meteorie Iron, W. 
Ramsay: The physical properties of Argon, LorD RaAyuErGH: The Fluo- ~ 
rescence of Argon, 264.—The Principles of Physics, A. P. GAGE, 265. 
Geology and Mineralogy—The Protolenus fauna, G. F. MA?THEw, 265.—Pre- 
Cambrian organisms, L. CAyeux, 267.—Grundztge der Palzeontologie (Palezo- 
zodlogie), VON K. A. VON ZITTEL, 268.—The occurrence of Tertiary clay on- 
Long Island, N. Y., A. M. Epwarps: On Composite Dikes in Arran, JUDD, 
270.—A plumbiferous Tetrahedrite, G. C. HorrmaNnN, 273.—Minerals and how 
to study them: A book for beginners in Mineralogy, E S8. Dana: The Consti- | 
tution of the Silicates, F. W. CLARKE: Native Silica: a treatise upon a series 
of specimens of Quartz, Rock erystal, Chaleedony, Agates and Jaspers, 
B. WRiGaT, 274. 
ete., le 
Miscellaneous Scientific Intelligence = Rope of the Commies appointed by the 
Smithsonian Institution to Award the Hodgkins Fund Prizes, 275. 
