C N T E X T S . 



p 

 Art, XLIV. — Radiation of Atmospheric Air; by C. C. 



Hr tchins - . 35 7 



XLV. — Atmospheric radiation of Heat and its Importance in 



Meteorology ; by C. Abbe 304 



XLVI. — Experiments upon the Constitution of certain Micas 



and Chlorites; by F, W. Clarke and E. A. Schneider 378 

 XL VII. — Qualitative Separation and Detection of Strontium 



and Calcium by the Action of Amyl Alcohol on the 



Nitrates; by P." E. Browning. 3R6 



XL VIII. — The Age and Origin of. the Lafayette Formation ; 



by E. W. Hilgard _-_ 389 



XLIX. — Influence of Swamp Waters in the Formation of the 



Phosphate Nodules of South Carolina; by 0. L. Reese 402 

 L. — Plattnerite, and its Occurrence near Mullan, Idaho ; by 



W. S. Yeates ; with Crystallographic Notes, by E. F. 



. Atres . ... 407 



LI. — Upper Silurian Strata near Penobscot Bay, Maine ; by 



W. W. Dodge and C. E. Beechkr. With Map . 412 



LII. — Zinc-bearing Spring Waters from Missouri ; by W. F. 



HlLLEBR AND . ... 418 



LIIL — -A Meteorite from Pennsylvania; by W. G. Owens. 423 



LIV. — Two Meteoric Irons; by. G. F. Kunz and E. Wein- 



schenk. With Plate XIII ...... 424 



LV. — The Molecular Masses of Dextrine and Gum Arabic as 

 determined by their Osmotic Pressures ; by C. E. Line- 

 barger. 1 .. . 426 



Appendix. — LVI. — A New Order of Extinct Eocene Mam- 

 mals (Mesodactyla) ; by O. C. Marsh 445 



LVII. — Notice of New Reptiles from the Laramie Forma- 

 tion; by O. C. Marsh 449 



SCIENTIFIC INTELLIGENCE. 



Chemistry- and Physics. — Physical Properties of Fluorine. Moissan, 429. — Expan- 

 sion of Chlorine in Violet Light, Richardson: Dissociation of liquid Nitrogen 

 peroxide, Ostwald, 430.— New method of preparing Carbonyl sulphide, Nur- 

 ic'san: Preparation and Properties of Cassium, Beketopf: Color of Cobalt- 

 Solutions, Etard, 431. — Method of showing Electrical Waves, Lecher: Per- 

 manent Magnetic Field, W. Hibbert: Dielectric Constant and Conductivity, 

 M. E. Boutt: Aberration, Rayleigh, 432. — Kirchhoff's Law and the radiation 

 of Gases, E. Prin-gsheim, 433. 



Geology and Natural History. — Note on distribution of upturned Cretaceous beds of 

 Brit. America, G. M. Dawson, 433. — Preliminary Report on the Coal-deposits of 

 Missouri, A. Winslow : Baltimore, with an account of the Geology of its envi- 

 rons, Williams, 435. — Annuaire Geologique, L. Carez et H. Douyille : Supple- 

 mentary Appendix to Travels amongst the Great Andes of the Equator, E. 

 Whtmper: Concerning principles which accompany chlorophyll in leaves, 

 Etard : Structure of the ovule and the development of the embryo-sac in 

 Vincetoxicum, Chadveaud, 436.— Researches regarding the effect of leaf-re- 

 moval in the case of grape-vines, A. Muntz: The Italian Botanical Society,' 437. 



Miscellaneous Scientific Intelligence. — Latitude Observations at Waikiki, on the 

 island of Oahu, Hawaiian Islands, 438. — National Academy of Sciences, 441. 



Obituary. — Sereno Watson, 441. 



