CONTENTS. 



Page 



Art. XLIX. — Notes from the Bermudas; by A. Agassiz __ 411 



L. — Discovery of Devonian Rocks in California ; by J. S. 



Diller and C. Sohuchert 41C 



LI. — Blue Iodide of Starch ; by C. F. Roberts 422 



L1L— Beaver Creek Meteorite ; by E. E. Howell 430 



LIU. — Allanite Crystals from Franklin Furnace, N. J.; by 



A. S. Eakle _■ 436 



LIV. — Self-Acting Mercurial Air pump; by E. W, Morlet 439 



LV. — New Method of determining the relative Affinities of 



certain Acids ; by M. C. Lea 445 



LVI. — Argyrodite and a new Sulphostannate of Silver from 



Bolivia; by S. L. Penfield 451 



LVII. — Damping of Bell-magnets and Ring-magnets by sur- 

 rounding copper ; by A. Kendrick : 454 



LVIII. — Thallium Triiodide and its Relation to the Alkali- 

 Metal Triiodides ; by EL L. Wells and S. L. Penfield 463 



LIX.— Notes on the Gold Ores of California; by H. W. 



Turner 467 



LX. — Recent analysis of Pele's Hair and a Stalagmite from 



the lava Caves of Kilauea; by A. H. Phillips 473 



SCIENTIFIC INTELLIGENCE. 



Chemistry and Physics — Mass of a Liter of Normal Air. Leduc: Preparation of 

 Nitrogen monoxide, W. Smith : Conversion of Yellow Phosphorus into the Red 

 variety, Retgers, 475. — Behavior of Carbon. Boron and Silicon in the Electric 

 Furnace, Moissax, 47 6 — Crystallized Silicon carbide or Carborundum, MfjHL- 

 hauser, 477. — Antimony-Blue, Seboe : Nitro-inetals. Sabatier and Sexderexs, 

 47 8. — Preparation of Ethyl Ether, Krafft : Line Spectrum of Oxygen, M. Eisig : 

 Lillienthal's experiments on flying, Liliexthal: Apparatus for the demonstra- 

 tion of Ampere's laws, Raps, 479. — Magnetisation of Iron by rapid Electrical 

 Oscillations, Exemexcic, 4 SO. 



Geology and Mineralogy — Straining of the Earth resulting from Secular Cooling, 

 C. Davisox, 480. — Appendages of Trilobites, C. D. Walcott: Geological Sur- 

 veys in Alabama, E. A. Smith: Tertiary Tipulidse, S H. Scudder, 431. — Shaw- 

 angunk Mountain. N. H. Dartox : Geological Section of the Alps. A. Roth- 

 pletz: Arkansas Coal Measures. J. P. Smith: Crinoidea of Gotland, F. A. 

 Bather, 482. — Vorwelt und ihre Entwickelungsgeschichte, E. Kokex : Correc- 

 tion, 483. 



Miscellaneous Scientific Intelligence — Watson Gold Medal of the National 

 Academy of Sciences, 483. — Use of Governmental Maps in School, W. M. Davis, 

 C. F. Kixg and G. L. Collix: National Academy of Sciences, 484. 



Obituary — Samuel White Baker : Yerxox Lovett Camerox : William Pex- 

 gelly: George Pouchet: Charles Edouard Browx-Sequard : Joseph de 

 Szabo. 484. 



