The following comparison of the elements with the observations published in Volume 18th of Schumacher's Ast. Nachr., cleared of parallax and aberration, leaves the annexed differences. The times are not yet freed from aberration, and are those of the respective meridians of the places of observation.

BERLIN.

Berlin

A a Cos d'

Ꭺ Ꮄ

Date. Mean Time. Observed R. A. Reck.-Obs. Observed Dec. Reck.-Obs.

7. From the Corporation of the University of Cambridge, Mass. dated Cambridge, May 2, 1844, acknowledging the receipt of Proceedings and Transactions of the Society:

8. From Mr. D. C. Freman, dated Washington, N. C., June 3, 1844, suggesting the publication of the whole of the obituary notice of Judge Gaston, read before the Society by Mr. Dillingham; and on motion of Mr. Kane permission was granted to the author to publish the same should he desire it. The following donations were announced:

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Monthly Notices of the Royal Astronomical Society of London. Vol. VI. Nos. 3, 4, 5. 8vo.-From the Society.

Nouveaux Mémoires de la Société Impériale des Naturalistes de Moscou. Tome VII. Formant le tome XIII. de la Collection. Moscow, 1842. 4to.-From the Society.

Royaume de Belgique. Ministère de l'Intérieur.
mission Centrale de Statistique. Tome I.
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Population, Mouvement de l'État Civil
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Astronomical Observations made at the Radcliffe Observatory, Oxford, in the year 1841. By Manuel J. Johnson, Radcliffe ObserPublished by order of the Radcliffe Trustees. Oxford, 1843. Vol. II. 8vo.-From the Radcliffe Trustees.

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Journal of the Franklin Institute of the State of Pennsylvania. Third Series. Vol. VII. No. 6. June, 1844. 8vo.-From Dr. Pat

terson.

Proceedings of the Academy of Natural Sciences of Philadelphia. December, 1841. No. 9. Vol. II. March and April,

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1844. No. 2.-From the Academy.

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History of the United States, from the Discovery of the American
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Essays on Magnetism. By the Rev. Wm. Scoresby. Edinburgh, 1832-3. 8vo.-From the same.

Remarks on the Probability of Reaching the North Pole. By the Rev. Wm. Scoresby. From the Edinburgh New Philosophical Journal, for July, 1828. 8vo.-From the same.

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Report of Capt. George W. Hughes (Topographical Engineers) relative to the Working of Copper Ore. Senate Document, 28th Congress, No. 291.-From Col. J. J. Abert.

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Reliquiæ Baldwinianæ: Selections from the Correspondence of the late William Baldwin, M.D. With Occasional Notes, and a Compiled by Wm. Darlington,

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Astronomische Nachrichten. Nos. 497 to 502, inclusive. 4to.

Professor Hart stated, for the information of the Society, that the Transit Instrument at the Observatory of the High School is now in complete operation, and that observations are made with it nightly.

Dr. Bridges made some observations on the affinity between certain metals, and especially on the belief that iron and mercury cannot be amalgamated. He exhibited a specimen in which such amalgamation existed. He first observed this accidentally. The mercury in the specimens adhered very firmly to the iron.

Mr. Lukens referred to cases in which the amalgamation had been effected when an iron plate was scraped under mercury; in other words, when the contact of air was prevented.

Dr. Patterson, on the part of the Committee of Finance, made a report, recommending three hundred dollars to be appropriated for the publication of the Society's Transactions, which, on motion, was agreed to.