condensing the superb violet-colored vapor which the heat causes to ascend; this forms brilliant violet-colored crystals, which are square prisms. M. Brugnatelli observes that if bodies are named according to their color, this substance should be called iode.

Though the crystalline forms of arragonite and calcareous spar are essentially distinct from each other, chemists have long been unable to detect any difference in their composition; and it consequently furnished a strong objection against the classification' of minerals according to crystal lization. This objection has now been removed by M. STROMEYER, Professor of Chemistry at Gottingen, who has discovered three per cent of strontian in arJagonite, while none exists in calcareous spar. His experiments have also been repeated by M. Laugier, and the result confirmed.

M. VAUQUELIN has discovered a fourth metal in crude pla tina, to which he has given the name of Iridium, on account of the various and lively colors of its solution. This metal, which has only been separated from its alloy by a long and complicated process, contains some remarkable properties. Its color and Justre resemble those of platinum, but it is less fusible. It is insoluble in the simple acids, difficultly soluble in nitro-muriatic Potash and nitre oxidize it, and combine with it into a black powder, which gives a bluecolored solution; but it forms a red solution with boiling nitromuriatic acid. Its blue solutions also become red when boiled; but both the red and the blue are

acid.

Pulse. Dr. P.'s researches lead him to conclude that the pulse is nothing more than the re-action or impetus of the blood to maintain its regular motion. He considers the blood as flowing through the arteries with an uniform and continuous current; and a pulse takes place wherever the diameters of these canals are either naturally or artificially diminished; and this circumstance he considers as fully adequate to account for all the modifications of the pulse.

Dr. PROUT has analysed the coloring matter, or Ink, ejected by the Cuttle Fish, and obtained the following results: viz. Peculiar black coloring matter....

.78.00

hence it appears that the action of sulphuric acid upon alcohol produces ether by depriving it of a portion of its water, and olefiant gas, by depriving it of the whole.

The coloring matters from sandal wood and alcanette (anchusa tinctoria) have always been considered as mere resins. M. PELLETIER, however, has ascertained from the experiments he has made on these substances, that besides most of the properties of resins, they contain others which, in his opinion, entitle them to be considered as peculiar vegetable principles.

Mr. LOESCHMAN has completed a new and improved Piano-forte, under the direction of Earl Stanhope. This instrument is made, according to his lordship's invention, with single steel strings, the lower being about one-tenth of an inch in diameter. It is said to combine loudness and sweetness of tone, with an improved swell.

M. SAGE has obtained products analogous to those of animals, from the distillation of Kelp; and when these were macerated in weak nitric acid, they afforded a cartilaginous net, simi. lar to that which is left by bones and madrepores, when deprived. of their earthy parts. M. Sage concludes, from these two facts, that the fuci are polypi.

FOR PUBLICATION.

King Edward VI. and Queen Mary I.; also to the Embassies and Correspondence of their respective Governments with Foreign Potentates, on Ecclesiastical and other

weighty Affairs. In which, many things which had escaped previous writers and historians are brought to light, in regard to the Causes of the Reformation; and the tempers, practices, successes, and reverses, of the two Cardinals, Wolsey and Pole, and other prelates and great men of both parties, under the three reigns. With the cruelties and severities which accompanied the restoration of the Pope's Authority and the Papal Religion in this Kingdom, and the sufferings of the Reformed, during the five years of Mary's Government. In seven vols. With a large Appendix containing original Papers, Records, &c. &c. By John Strype, M. A.

A New Edition is nearly ready, in Octavo and Quarto. The paging of the Folio Edition, from which it is printed, is preserved in the' Margins, and a full Index is added at the end.

This work will be soon after followed by

Annals of the Reformation and Establishment of Religion, and other various Occurrences in the Church of England, during the first Twelve Years of Queen Elizabeth's happy Reign. Wherein Account is given of the Restoring of Religion from its Corruptions introduced under Queen Mary; of filling the Sees with Protestant Bishops; of the famous Synod assembled in the year 1562; of the Workings and Endeavours of the Papists; and of the first Appearances of the Dissensions from the Established Church. Compiled faithfully out of papers of state, authentic records, public registers, private letters, and other original manuscripts. Together with an Appendix or Repository, containing the most important of them. By John Strype, M.A.

Dr. Campbell's Lectures on Ecclesiastical History, in two vols. are reprinting uniform with the new edition of his Translation of the Gospels, and will soon appear.

Mr. Blaine is preparing for press, the Outlines of the Veterinary Art, or the Principles of Medicine as applied to a Knowledge

of the Structure, Functions, and Economy, of the Horse, also a more scientific manner of treating his various diseases. The whole illustrated by anatomical and other plates. This second edition will be entirely remodelled with nume rous alterations and additions. To be comprised in one thick volume, 8vo.

An Introduction to Entomology; or Elements of the Natural History of Insects. By the Rev. William Kirby, B.A. F.L.S. author of " Monographia Apum Angliæ," and William Spence, Esq. F.L.S.

Fragments of several Orations of Cicero, with a Commentary of Asconius Vedianus, from original Mss. lately discovered in the Ambrosian Library at Milan, will speedily be published under the direction of Mr. James G. Jackson.

M. Schlegel's Course of Dramatic Lectures is translating from the German by Mr. Black, and printing in two octavo volumes.

The Life and Correspondence of Lady Arabella Stuart, cousin to James I. of England, compiled from original letters (never before published) are preparing for. publication.

Mr. Mackenzie has in considerable forwardness, Speculations on Various Subjects; consisting of a series of literary, moral, and religious essays.

The Paris Spectator; or, l'Hermite de la Chaussée-d'Antin. Containing observations upon Parisian Manners and Customs at the commencement of the Nineteenth Century. Translated from the French by William Jerdan. In two volumes, duodecimo,

Dr. Reade, of Cork, will soon publish, Optical Outlines of a New Theory of Vision, Light, and Color, with Experiments on Radiant Caloric.

Mr. Charles Smith, the artist, who was some time a prisoner in France, has in the press, the Mosiad, or the Deliverance of Israel from Egyptian Bondage, a sacred epic poem.

Dr. Miller, editor of the fourth edition of the Encyclopædia Bri

tannica, intends to publish a new Dictionary of Arts, Sciences, and Miscellaneous Literature, to be called the Encyclopædia Edinensis.

Mr. Thomas Noble, of Liverpool, is printing in an octavo volume, Hampden, or the Concentric, a poem.

Wm. Pitt, Esq. late of Pendeford, is preparing for the press, a Topographical History of Staffordshire, compiled from the most authentic sources, and to form a large voJume in octavo.

A Collection of Critical Tracts on English Poetry, by Gascoigne, Webbe, Harington, Campion, and others, edited by Mr. Haselwood, will soon be published.

Mr. Wadd is engaged on a work on Diseases of the Urinary Organs and Genitals, illustrated by engrav ings from his own drawings; and the first part, on the Prostate Gland, and Bladder, is now in the press.

AGRICULTURE.

Antiquarian Repertory, Vol. 1. foolscap 8vo. 15. boards; and with Proof Impressions of the Plates, on large paper, 11. 4s.

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Fragmenta Antiquitatis, or Ancient Tenures of Land, and Jocular Customs of Manors. By II. M. Beckwith. 4to. l. 12s. 6d. bds. royal 4to. 31. 3, bds.

ARTS AND MANUFACTURES.

A Practical Treatise on Gas Light; exhibiting a summary des-' cription of the Apparatus and Machinery Lest calculated for Illumi

nating Streets, Houses, and Manufactories. By Frederick Accum, Operative Chemist, with colored plates. 8vo. 12s.

BIBLIOGRAPHY.

Bibliotheca Anglo-l'oetica; or a Descriptive Catalogue of a rare and rich collection of early English Poetry: In the possession of Longinan, Hurst, Recs, Orme, and Brown. Illustrated by occasional Extracts and Remarks, Critical and Biographical; royal 8vo. price: 11. 14s. boards.

A Catalogue of a Miscellaneous Collection of Books, New and Second-hand, on Sale at the Prices affixed by John and Arthur Arch, 61, Cornhill, including some of the earliest Specimens of Typography, from the Presses of both Foreign and English Printers; also a Collection of Bibliography. 8vo. 2s. 6d.

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row.

BIOGRAPHY.

The Political Life of William Wildman, Viscount Barrington: compiled from original Papers, by his Brother Shute, Bishop of Durham. 8vo. 6s. bds, and in royal 8vo. with a portrait, price 12s.-A few copies are printed in royal 4to. pr. 11. 1s. bds.

The Lives of Edward and John Philips, Nephews and Pupils of Milton; including various particulars of the Literary and Political History of their Times. Embellished with an Original Likeness of President Bradshaw, and two other Portraits. By William Godwin. 4to. 21. 2s. boards. To which are added, Collections for the Life of Milton, by John Aubrey, FRS. 1681, printed from the Manuscript Copy in the Ashmolean Museum; and the Life of Milton, by Edward Philips, first printed in 1694.

Memoirs of the Abbe Edgeworth; containing his Narrative of the Last Hours of Louis XVI. By C. Sneyd Edgeworth. Post 8vo. 7s. bds.

Remains of the late John Tweddell. By Robert Tweddell, A.M. 4to. 91.3s. lds.

CONCHOLOGY.

An Introduction to the Study of Conchology: including Observations on the Linnean Genera, and on the Arrangement of M. Lamarck, a Glossary, and a Table of English Names. Illustrated by colored Plates. By Samuel Brookes, F.L.S. 4to 31. 10s. bds.; and on large Paper with the Plates highly finished, 5. 15s. 6d.

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The Traveller's Complete Guide through Belgium, Holland, and Germany. By Charles Campbell, Esq. 12mo. 7s. bds.

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A New General Atlas; constructed and adjusted from the best Systematic Works; and the most authentic Accounts of recent Voyages and Travels. No. 11. pr.

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HISTORY.

A Narrative of the Invasion of France in 1814. By M. De Beauchamp. 2 vols. 8vo. 1. 1s. bds.

United States of North America, at the commencement of the Nineteenth Century, 1800 to 1810, with Statistical Tables, and a New Map, containing all the late discoveries, and exhibiting the division of Territorial Zones, Boun dary Lines, &c. By Le Chevalier Felix De Beaujour, late French Consul General in the United States, author of the View of the Commerce of Greece, &c. trans-lated from the French, with Illustrative Notes and Appendik. By Wiliam Walton, Esq. In One Vol. 8vo.price 16s. Illustrated with a New Map and Seventeen Statistical Tables.

LAW.

The Law and Practice of Judg ments and Executions. By Peregrine Bingham, A.B. 8vo. 14s. boards.

MEDICINE AND CHIRURGERY.

Reflections on Fever; intended to point out the principles upon which a systematic and useful Method of Treatment might be established. By Robert Calvert, M.D. 8vo. 4s. bds.

Observations upon the Bulam Fever; the Disease which has of late years prevailed in the West Indies, on the coast of America, at Gibraltar, Cadiz, and other parts of Spain; with a collection of facts proving it to be a contagious Disease. By William Pym, Esq. Deputy Inspector of Hospitals, &c. 8vo. 12s. bds.

A View of the Relations of the Nervous System in liealth and in Disease; containing selections from the Dissertation, to which was adjudged the Jacksonian Prize for the year 1813; with additional Illustrations and Remarks. By Daniel Pring 8vo. 7s, bds.