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Physics and Chemistry.-On the wave lengths of the metallic rays, THALEN, 272.

-On spectral analyses: On a normal spectrum of the sun, FIZEAU: On the red

protuberances from the surface of the sun, 273.-Further observations on the

spectra of some of the stars and nebulæ, etc., HUGGINS, 274.

Mineralogy and Geology.-Recherches Anatomiques et Paléontológiques pour servir

à l'histoire des Oiseaux fossiles de la France, par A. MILNE EDWARDS, 276.-Re-

port on recent Explorations in the Gibraltar Caves, by FRED. BROME, 277.-

On Calamiteæ and Fossil Equisetaceæ, by WILLIAM CARRUTHERS: Geological

Map of New Jersey, by GEORGE H. COOK: New Geological Map of Wisconsin,

by I. A. LAPHAM: Reliquiæ Aquitanicæ, 279.-Gold in Scotland, 280.

Botany and Zoology.-Field, Forest, and Garden Botany, a simple introduction to

the common plants of the United States east of the Mississippi, both wild and

cultivated, by ASA GRAY: Are Unios sensitive to light? note by C. A. WHITE, 280.

-Critical Remarks on Halcyonoid Polyps; No. 3, by A. E. VERRILL, 282.-On

the Distribution of Fresh-water Fishes in the Allegheny Region of South West-

ern Virginia, by E. D. COPE: Catalogue of the Reptiles and Batrachians found in

the vicinity of Springfield, Mass., with Notices of all other Species known to in-

habit the State, by J. A. ALLEN, 285.-Notes on Radiata in the Museum of

Yale College, No. 6.-Review of the Corals and Polyps of the West Coast of

America, by A. E. VERRILL: Annual Report of the Trustees of the Museum of

Comparative Zoology, 286.

Astronomy.-Meteors in August, 1868: Le Stelle Cadenti del Periodo di Agosto, os-

servate in Piemonte ed in altre Contrade d'Italia nel 1868: Error in Stanley's

Logarithmic Tables, 287.

Miscellaneous Scientific Intelligence.-Convention of American Philologists, 287.-

Gynecological Society, of Boston, 288.-Obituary.-Carl Friederich Philipp von

Martius, 288.-John Cassin, 291.-Prof. Theodore Strong, 293.-James David

Forbes: Dr. Hörnes, 294.

Miscellaneous Bibliography.—Handbook of Chemistry, for School and Home use, by

W. J. ROLFE and J. A. GILLET, 294.-Van Nostrand's Eclectic Engineering Mag-

azine: Annual Report of the Board of Regents of the Smithsonian Institution:

The Manufacturer and Builder: Blank Maps for marking the distribution of

Plants and Animals, 295.-Le Naturaliste Canadien, 296.

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SCIENTIFC INTELLIGENCE.

Physics and Chemistry.—On the refrangibility of the brilliant yellow ray of the sun's

atmosphere, 415.-On the presence of the vapor of water in the neighborhood of

the solar spots and on the spectral study of certain stars, 416.-Spectral obser-

vations of the star R in Gemini, SECCHI: On absorption lines produced by the

passage of the solar light through chlorine, MORREN: On hydrogen in its relation

to palladium, GRAHAM, 417.-Production of an artificial spectrum with a single

Fraunhofer's line: On the analysis of different varieties of carbon, BERTHELOT,

418.-On the direct synthesis of Cyanhydric acid, BERTHELOT: On the Ammo-

nium amalgam, LANDOLT, 420.-On a new method for preparing Carbonylic Sul-

phid, BERTHELOT: On Carbonylic Sulphid, BENDER, 422.-On carbonylic chlorid,

and a new compound of this substance with platinum, SCHÜTZENBGRGER, 423.—

On the relation between boiling point and constitution of hydrocarbons, SCHOR-

LEMMER, 424.-On a new source of octylic Alcohol, 425.-Tritylic (propylic) al-

cohol produced by fermentation: On the reduction of acetic oxyd to ethylic al-

cohol: On the alcohol obtained by the saponification of castor oil, 426.-On Sul-

pho-carbamid, 428.

Geology.-On a Mineral Phosphate from the island of Redonda, W. I.; by CHARLES

UPHAM SHEPARD, 428.-Final Report on the Geology of New Jersey; by GEO.

H. COOK, 430.

Zoology.-Are Unios sensitive to light? by ISAAC LEA, 430.

Miscellaneous Scientific Intelligence.-On the use of sodium in explosive powders,

Dr. H. FLECK, 431.-Decrease in the Production of Gold, BLAKE, 432.-Dana's

System of Mineralogy, 433.-Obituary.-J. Nicklès: William Mitchell, 434.

Miscellaneous Bibliography.—Handy Book of Meteorology, by ALEXANDER BUCHAN:

Annual of Scientific Discovery, by SAMUEL KNEELAND, 434.-First Principles of

Chemical Philosophy, by J. P. COOKE: Outlines of Physiology, Human and

Comparative, by JOHN MARSHALL: The Ornithological Collection of John Cas-

sin, 435.-Catalogue of the Orthoptera of North America, described previous to

1867, by S. H. SCUDDER: Memoirs of the Peabody Academy of Science: Bulle-

tin of the Essex Institute, 436.

ERRATA.

Page 193, line 3 from top, for "declination" read "co-declination."
"364, line 10 from bottom, read "one to two thousand."

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