to Life, by WAtTEE N. Hartley : Geological and Geographical Survey of the 

 Territories, F. V. Hatden ia charge : Compressed Peat : Report of the Superin- 

 tendent of the U. S. Coast Survey, 332.— Obituary.— l. A. Lapham, 333.— Rev. 

 Augustus Wing, 334. 



NUMBER LXV. 



Art. XLII. — On supposed changes in the Nebula M. 17= 



h. 2008=G. C. 4403; by Edwaed S. Holden, 341 



XLIIL— On the effect of thin plates of Iron used as armatures 



for Electro-Magnets, and a new form of Induction Coil ; 



by John Tkowbridgk, .- 361 



XLIV. — Concerning Phosphorus Oxychloride ; by Ira Rem- 



s-EN,. 365 



XLV. — On additional species of Fossils from the Primordial 



of Troy and Lansingburgh, Rensselaer County, 



" "'. W. Ford, 



I simple and very ; 

 I Forks to unison ; by Robert Spice, . 



by S. W. Ford, 

 .VI.— O] 



imple and very accurate method of tuning 



XLVIL — Silica of grasses and other plants carried up as Di- 

 atoms or other siliceous grains, and not in solution or as 

 soluble silicates ; by P. B. Wilson, 373 



XLVIIL— The Conglomerate Series of West Virginia; by 



William M. Fontaine, 374 



XLIX.— On new twins of Staurolite and Pyrrhotite ; by Ed- 



L. — Researches on the Solid Carbon Compounds in Meteor- 

 ites ; by J. Lawrence Smith, 



LI.— On the Oxidation product of Glycogen with Bromine 

 Silver Oxide and Water ; by R. H. Chittenden, . , . . 



Lll.— On the existence or not of Horns in the Dinocerata 

 by Richard Owen, 



Appendix.— LIII. — On some Characters of the genus Co 



ryphodon ; by O. C. Marsh,.. 



SCIENTIFIC INTELLIGENCE. 



Chemistry and P%sws.— Biplometer, LANnOLF: Specific Heat of Gases, Wiede- 

 mann. 403. — Crooke's Radiometer, S . ~ . _, ^ - , - . 



-The Gram Magneto-electric 



Mineralogy.— Doen the actual vegetation of the Globe furnish any 



Report of the Geological Survey of Ohio, by J. S. Newberry, 409.— 

 Survey of Alabama, by EuG. A. Smith, 410.— The Geological Record 

 y Wm. Whitaker, 411.— Report on the Geology of a portion of Colo- 

 ined in 1873, by .1. J. Stevenson: Das Gebirge urn Hallstatt, von 

 berg; Handbuch der Mmeral-Chemie: Einleitimg 

 in CAEi Klein, 413. 

 Zoology.— Phsenoiogical observations in Giessen, Hoffman : Bulletin of 

 414.— Nymphaea flava: Note on 

 <:oast, by A. B. Vekrtll, 416.— 

 IS meory- ^^AlJLeogeneBis; oi uie genenc connection between the Geryon- 

 l jEginidtE, by A. Agassiz, 420.— Animal Parasites and Messmates, Van 

 oj-.nkukn: The Journal of Anatomy and Physiology, conducted by G. M. Hum- 

 phrey. 421.— Bulletin No, 2, U. S.^Geological Survey of the Territories, 422. 

 ^.s^rp?MWiy.— Observations of the planet Jupiter: Repertory of works in Pure and 



Miscellaneous Scientific Intelligence. — ^The American Cyclopaedia, 422. Annual 



Report of the Light-House Board to the Secretary of the Treasury for the year 

 187.5: Meter-Diagram, 4:23.~-Obituary.—A. R. Marvine. 424. 



