CONTENTS 



Page 



Art. XXXII. — Action of Vacuum Discharge Streamers 



upon each other; by M. I. Pupin. With Plate XII ... 263 



XXXIII. — Melilite-bearing Rock (Alnoite) from Ste. Anne 



de Bellevue near Montreal, Canada; by F. D. Adams.. 269 



XXXIV. — Azure-blue Pyroxenic Rock from the Middle 

 Gila, New Mexico ; by G. P. Merrill and R. L. Pack- 

 ard 279 



XXXV. — Correlation of Moraines with Raised Beaches of 



Lake Erie ; by F. Leverett . 281 



XXXVI. — Magnesium as a Source of Light ; by F. J. 



Rogers i 301 



XXXVII. — Method for the quantitative separation of Barium 

 from Calcium by the action of Amyl Alcohol on the 

 Nitrates; by P. E. Browning 314 



XXXVIIL— Plicated Cleavage-Foliation; by T. N. Dale.. 317 



XXXIX. — Geological Age of the Saganaga Syenite ; by A. 



R. C. Selwyn 319 



XL. — Third Occurrence of Periclotite in Central New York; 



by 0. H. Smyth, Jr 322 



XLL— Fulgurite from Waterville, Me.; by W. S. Bayley.. 327 



XLII. — Miueralogical Notes ou Brookite, Octahedrite, Quartz 



and Ruby; by G. F. Kunz 329 



Appendix. — XLIII. — Recent Polydactyle Horses; by O. C. 

 . Marsh ..-. 339 



SCIENTIFIC INTELLIGENCE. 



Chemistry and Physics — Existence of Suspended Matter in Flames, Stokes: Use 

 of Surface Tension in Analysis, Gossart, 331. — Certain Metallic Hydrosul- 

 phides, Binder and Picton: Physical Constitutions of certain Sulphide Solu- 

 tions, Picton, 332. — Solution and Pseudo-solution, Picton and Linder, 333 — 

 Methods of Gas Analysis, W. Hempel, 334. — Lecons sur les Metaux, A. Ditte: 

 Solutions, W. Ostwald, 335. 



Geology and Natural History — Ueber Tertiarpflanzen von Chile, Engelhardt, 335. 

 — Miocene Plants from Northern Bohemia, Engelhardt, 336. — Calcareous 

 Algas, Rothpletz : Fructification of Bennettites Gibsonianus, Graf zu Solms- 

 Laubach : Nelumbium Provinciale des Lignites Cretaces de Fuveau en Prov- 

 ence, G. de Saporta, 33*7. — Eecherches sur la Vegetation du niveau Aquitanien 

 de Manosque, G. de Saporta: Fauna of British India, including Ceylon and 

 Burma, W. T. Blanford : Inheritance of Acquired Characters. D. G. Elliot, 338. 



Obituary — Sereno Watson, 338. 



