viii CONTENTS. 



Number 282. 



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 416 



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



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



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



A. S. Eakle.. - 436 



LIY. — Self-Acting Mercurial Air pump; by E. W. Morley 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 H. 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, TV. Smith: Conversion of Yellow Phosphorus into the Red 

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

 Furnace, MoiSSAST, 476 — Crystallized Silicon carbide or Carborundum, Muhl- 

 hacser, 477. — Antimony-Blue, Sebor: Nitro-metals. Sabatier and Senderens, 

 478. — Preparation of Ethyl Ether, Krafft: Line Spectrum of Oxygen, M. ErsiG: 

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

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

 Oscillations, Klemencic, 480. 



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

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

 veys in Alabama, E. A. Smith: Tertiary Tipulidas, S. H. Scudder, 481. — Shaw- 

 angunk Mountain. N. II. Darton : Geological Section of the Alps, A. Roth- 

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

 Bather, 482. — Yorwelt unci ihre Entwickelungsgeschichte, E. Koken: Correc- 

 tion, 483. 



Miscellaneous Scientific Intelligence — "Watson Gold Medal of the National 

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

 C. F. King and G. L. Collin: National Academy of Sciences, 484. 



Obituary — Samuel White Baker: Yernon Lovett Cameron: William Pen- 

 gelly : George Pouchet : Charles Edouard Brown-Sbquard : Joseph de 

 Szabo, 484. 



