Page:The American journal of science, series 3, volume 49.djvu/15

Rh CONTENTS. Vll

Number 293.

Page

James Dwight Dana. [With a portrait] (frontispiece) __ _ 329

Art. XXVIII. — Color Relations of Atoms, Ions and Mole- cules; byM. C. Lea. Parti. (With Plate IV.) 357

XXIX. — Further Notes on the Gold Ores of California ; by

H. W. Turner __ „._ 374

XXX. — Some Relations between Temperature, Pressure, and

Latent Heat of Vaporization; by C. E. Linebarger ... 380

XXXI. — Double Halides of Caesium, Rubidium, Sodium and

Lithium with Thallium ; by J. H. Pratt 397

XXXII. — Argon, Prout's Hypothesis, and the Periodic Law ;

byE. A. Hill. _. 405

XXXIII. — Improved Rock Cutter and Trimmer ; by E. Kid- well _ 417

XXXIV. — Relation of the plane of Jupiter's orbit to the mean-plane of four hundred and one minor planet orbits ; by H. A. Newton. _ 420

SCIENTIFIC INTELLIGENCE.

Chemistry and Physics — Presence of Argon and of Helium in Uraninite, Ram- sat and Crookes, 421. — Combination of Argon with Benzene vapor, Berthelot, 422. — Presence of Argon lines in the Spectrum of Atmospheric Air, Newall, 424. — Spark Spectrum of Argon as it appears in the Spark Spectrum of Air, Hartley, 425.

Geology — Reconnoissance of the Bahamas and of the elevated reefs of Cuba in the 'Steam Yacht "Wild Duck," 1893, A. Agassiz, 425.— Formation of Dolo- mite, C. Klement, 426. — Dolomite -making and dolomitic calcareous organisms, A. G-. Hogbom, 427. — Bahama Expedition of the State University of Iowa. Narrative and Preliminary Report, C. C. Nutting, 428.

Miscellaneous Scientific Intelligence — National Academy of Sciences, 428. — Penck's Morphologie der Erdoberflache, Penck, 429. — Orbit of Miss Mitchell's Comet, 1847, VI, H. A. Newton, 430.

Obituary — Dr. Gideon E. Moore: Prof. James E. Oliver: Francesco San- soni, 430.