Academy of Science : ADiiual Report of the Chief of Engineers to the Secretary 

 of War, for 1875, 243. — Annr.al Report upon the Geographical Explorations and 

 Surveys west of the 100th Meridian ; by O. M. Wheeleb, 244— Geological Sur- 

 vey of the Territories, F. V. Haydex, 245.— Specific gravity Balance of R. Parish: 



Yorlf, 247.— Summer ScJiools of Zoology and Geology at' Cornell University: 



248. — Obituary. — George Poulett Serope, 248. 



NUMBER LXIV. 



Akt. XXXI.— On the Gases contained in Meteorites; by ^^^' 

 Abthuk W. Wekiht, 253 



XXXII.— Review of Croll's Climate and Time with especial 

 reference to the Physical Theories of Climate maintained 

 therein ; by Simon 'New(^omb, 263 



XXXIII. —On crystals of Tourmaline with enveloped Ortho- 



, by EDWAito II. Willi 

 -The Conglon 



XXXIV.— The Conglomerate Series of West Virginia ; by 



WiLLiAii M. Fontaine, 276 



XXXV.— Resnlts of Experiments on the Set of bars of 

 Wood, Iron, and Steel, after a Transverse Stress; by 

 Wm. a. Norton, ._.. 284 



XXXVI.— On the constitutional forrnuhe of Urea, Uric Acid, 



and their derivatives (concluded) ; by J. W. Mallett, 291 



XXXVII — Evidences of horizontal crushing in the formation 



of the Coast Range of California; by Joseph Le Conte, 297 



X XXVI II. — Description of Mancasellus hrachyurus, a new 



fresh-water Isopod ; by O. Hargek, 304 



XXXIX.— Professor Tyndall on Germs, .... 305 



XL.— Discovery of a new Planet ; by C. H. F. Peters. 317 



Appendix. — XLL- -Principal Characters of the Brontothe- 



ridm ; by ( ). C. Marsh, 335 



SCIKNTIFIC INTELLIGENCE. 



Ghtiiiistry and Physics. — On a Crystallized Hydrate of Hydrochloric acid, Piebhe 

 and Puchot: On the decomposition of Water by Platinum, DEViHEand Debr.\t, 

 3 1 8. — On a new compound of Sulphur and Oxygen, R. Webek : On the Purifl- 



BAUDRAN : Conductivity of Gases. M. A. Winkelma.nn, 320. — Thermal Properties 

 of Liquids. M. Pictet : Dependence of Electricd Resistance on the Motion of tlie 

 Conductor, M. Edluxd, 321. —Electric Spark with large Batteries, De la Rvk and 

 MULLEK, 322— Acoustics, A. M. Matee, 324. 

 Botany and Zoology.— Soxamc&l Contributions, 32.5.— Botanical Necrology: Life 



markable forms of Animal Life from the great deeps off the Norwegian Coast, 

 etc.. by George 0. Sars, 328. — A Course of Practical Instruction in I'-lementary 

 Biology, by Huxley andMARTix: Crustacea of Mexico and Central America, by 

 M. A. Milne-Edwards : Cumacea from great depths in the Arctic Ocean, by 

 G. O Saes, 329. — Moa or Dinomis of New Zealand : Carnivorous Reptiles 

 having some features of Carnivorous Mammals, from the Triassic (?) of South 

 Africa, Prof. Owen: The Crustacean. Artemia salina, changed in some of its 



; the U. S. Observatory, Rear-Admiral B. F. Sands, Superinten 

 y Tables for determining the angle of position of the sun's axis, 3 



