X. Xew Form of Lantern Galvanometer ; by F. E. Niphek, 1 

 XI. — New occurrence of Tartronic Acid, with remarks on the 



molecular structure of Glyceric Acid ; by S. P. Sadtler, 1 

 XIL— Note on the " Chloritic formation " on the western 



l)order of the New Haven iJegion ; by Jamt^s T). Dana, 1 

 XIIL— Rocks of the '' Chloritic formation" on the Western 



Border of the New Haven region ; by G. W. Hawes, 1 

 XIV.— On a new Tertiary Lake Basin ; by George B. CiRiN- 



^ELLand Edward S. Dana, 1 



XV.— I. On the Product of the action of Potassium on Ethyl 



Succinate ; by Ira Kemsex, 1 



II. On the action of Ozone on Carbon Monoxide ; by 



Ira Rei\isk>j^ and M. S, Southworth, 1 



XVI. — On the Optical Character of the Chrondrodite of the 



Tilly Foster Mine ; by Edward S. Dana, ] 



XVII.— On Ilermannolite, a new species of the Columbian 



group ; by Charles Upham 

 PENDix.— XVIII.— Principal Cli 



Appendix. — XVIII. — Principal Chai-acters of the Dinocerata; 



by O. C. Marsh,.. 163 



. SCIENTIFIC INTELLIGENCE. 



Chemistry and Physics. — On the Didyraium absorption-spectrum and the Atomic 

 weight of uenum, Buhkig : On the Density of Platinum, of Iridium and of their 

 alloys. Sainte-Claire Deville and Debray : New method of Chlorinating Hy- 

 drocarbons, Aronheim, 142.— On the efleet of mass on the Chemical action of 

 Water, Ostwald : Formation of Alizarin by Reduction of Rufigallic Acid. Wid- 

 MAN, 143. — On the Separation of Mixed Liquids, Dticlaux : Stationary Liquid 

 Waves. GuTHEiE, 144. — Waves in Elastic Tube.s, Mabey, 145. — Transparency of 

 Flame and of the Air, Allaed ; Etheric Force of Edison, Houston. 146. 



Geology and Mineralogy. — U. S. Geological and Geographical Survey of the Territo- 

 ries, Hayden. 147.— Drift formation and Gold in Missouri, Broadhead : Glacial 

 strife nori;h of Lake Ontario, Chapman : New Fucoid from the Water-lime Group 

 of Western New York, Grote and Pitt : Petrifaction, 150. — Green Mountains: 

 Geology of New Caledonia, iol.-Achrematite, a new mineral, Mallett: 

 Schraufite: Seebachite, Rath, 1o2.--A new species of Dalmania, 153. 



Botany and Zoology.— Nawliu on the Nature of Heredity and Variability in Plants, 



1 57.— Use of the hygiometric twisting of the feiil to the carpels of Erodium : The 

 Lemurs not related to the Monkeys : Fauna of the Greenland Seas, 159. 



Astrommy. — New Planet: Harvard Observatory Engravings: The Uranian and 

 Neptunian Systems investigated with the 1 6-inch Equatorial of the U. S. Obser- 

 vatory, Newcomb, 159. 



Miscellaneous Scientific Jntelligence. — Report on the Compressive Strength, Specific 

 Gravity, and Ratio of Absorption of Building Stones in the United States, GitL- 

 MORE; Science and Art Department of the Committee of Council on Education, 

 South Kensington : Works on the Paleontology of the Rocky Mountain Surveys 

 in progress, 160.— Geological Map of the 40th ParaUel Survey: Depth of the 

 North Pacific, 161.— An Iceland chain of elevations in the North Atlantic: 



NUxMBER LXIII. 

 XIX.— On the Veiled Solar Spots ; by L. Trouve! 

 -Structure of Obolella chromatica ; by E. Bili>ing 

 — On the Damming of Stn ^ ^ •-. • i • 

 melting of the great Glacie 



