ness of its external surface.-Sealed September 27th.— 2 months for Inrolment. To Thomas Timothy Beningfield, of High-street, Whitechapel, in the county of Middlesex, tobacco-manufacturer, and Joshua Taylor Beale, of Christian-street, St. George's in the East, cabinet-maker, for certain improvements in steam-engines.-Sealed September 27th. -6 months for Inrolment. To John Bourdieu, of Lime-street, in the city of London, Esq., for a communication, from a certain foreigner, residing abroad, of a method or means of improving the preparation of colours for printing wove cloths.—Sealed September 27th.-4 months for Inrolment. To John Dowell Moxon, of Liverpool, in the county of Lancaster, merchant and ship-owner, and James Fraser, of King-street, Commercial-road, in the county of Middlesex, engineer, for certain improvements in ships' cabooses, or hearths; and also for apparatus to be occasionally connected therewith, for the purposes of evaporating and condensing water.—Sealed September 27th. -6 months for Inrolment. To Frederick Louis Fatton, of New Bond-street, in the county of Middlesex, watch-maker, for certain improvements on, or additions to, watches or chronometers in general, whereby they may be rendered capable of marking or indicating the precise moment of any desired observation, or rapid succession of observations, and without the necessity of stopping the regular movement of the watch, as in ordinary stop-watches.-Sealed September 27th.-2 months for Inrolment. To Samuel Pratt, of Bond-street, in the county of Middlesex, trunk and camp-equipage manufacturer, for certain improved straps or bands, to be used for securing luggage upon chaises or coaches, or for securing property (generally) when placed in exposed situations.— Sealed September 27th.-6 months for Inrolment. N.B. All the above calculations are made to Mean or Clock Time. 1 224 LITERARY NOTICES, &c. THE Life and Remains of Dr. CLARKE, consisting, for the most part, of original letters and extracts, from his unpublished journal and MSS. are about to be published by subscription, in one Volume 4to. Mr. J. B. SAY, so justly celebrated throughout Europe for his writings on Political Economy, has announced his intention to establish, about the beginning of November, at his house, No.92, Rue du Faubourg St. Martin, at Paris, a Series of Conversations on Political Economy, for the benefit of those gentlemen who may wish to acquire a more extended knowledge of that interesting science. Previons to admission, it will be necessary to procure an unexceptionable recommendation from some person of known respectability, which must be forwarded to the house of the Professor, together with the subscription for the course, which is 300 francs.- Foreigners may have their names entered for the Course by the agency of some friend before their arrival in Paris.-At the end of the Course diplomas will be delivered, if required, to those gentlemen who may be desirous of possessing a testimonial of their proficiency in the science. The third volume of the Bombay Transactions, illustrated by numerous plates, is in the press. The collection of casts from the celebrated Egina marbles, (17 in number,) lately presented by Mr. JOHN FORS TER, jun. and which had sustained considerable damage in their passage from Italy, have now been completely restored, and placed in the room of the Royal Institution at Liverpool. A curious concrete mass of iron and zinc, in weight more than a pound, has been presented to the Liverpool Institution, by a gentleman of London. It is a part of the residuum which remained in an oven in which some millions of bank-notes had been burnt, and is supposed to have been amalgamated from the materials which had entered into the composition of the ink. Mr. BULLOCK has imported some of the wapiti, or gigantic stag, of the Missouri. These creatures are of the size of horses, and can be broken for har ness, in which their speed must be prodigious. The pair, formerly exhibited in the King's Mews, have, we understand, propagated their species, in the possession of Lord Glenlyon. Various accounts have been published in this country of a mermaid, exhibited at the Cape of Good Hope, and which, it is confidently said, sets at rest the question as to the existence of such an extraordinary animal. We confess, however, that we are still incredulous; and very much suspect, that all the mermaids hitherto seen, or said to have been seen, were nothing more than some of the species of the phoca or seal; perhaps, the phoca leonina, or phoca ursina. A plate of the solar system, with explanatory letter-press by Mr. ADAMS, of Edmonton, is about to be published. It will represent, on a sheet, four feet by one foot, the respective sizes and distances of the sun and planets; the former being ten inches in diameter. Thus the solar system will be seen, and a just idea of it formed, at one view. Mr. ARTIS is preparing for publication a series of Plates, illustrative of recent discoveries, and excavated remains, of a Roman town at Castor. It will contain plans of the principal buildings, and correct representations of the Mosaic and fresco designs; of implements, utensils, coins, &c. A new Edition, with additions, and illustrated by coloured plates, is announced, of Mr. MAWES'S Treatise on Diamonds and coloured Stones, including their history, natural and commercial.-A Treatise on Conchology, by the same gentleman, is also in the press. Dr. MEYRICK has announced a work of extent and interest, on Ancient Armour. An Act for the erection of a national monument in Scotland passed in the last session of Parliament. It is to be a fac-simile of the Parthenon of Athens, with a place of worship for 3000 persons, including his Majesty's forces, (sailors and soldiers,) stationed in and about Edinburgh. The city of Edinburgh have granted a site on the Calton-hill, for the intended edifice. London JOURNAL OF ARTS AND SCIENCES. No. XXIII. Recent Patents. TO JOSEPH WASS, of Lea Wharf, Ashover, in the County of Derby, for an Improvement which prevents the ill Effects to Vegetative and Animal Life that have hitherto been occasioned by the noxious Fumes and Particles which arise from smelting or calcining Lead Ore and other pernicious Minerals. THIS improvement consists in a new mode of ventilating the flues and chimneys of furnaces employed in the smelting and calcining of lead ores, and also in a mode of arresting the heavy particles of matter usually emitted. in this process, which, when allowed to pass into the atmosphere, are found extremely noxious and injurious to animal and vegetable life. By this contrivance these heavy particles are precipitated and deposited below, while the lighter, or mere vapour is conducted into the atmosphere at a sufficient height, and under such circumstances, as will cause it to rise and mix with the air, so as to produce no deleterious effects. These objects, it is stated, will be fully accomplished by a contrivance similar to that shewn at Plate XI. Fig. 1 is a plan, or horizontal section, of a building, wherein four smelting furnaces, A, A, A, A, are erected. In the centre of the building the horizontal flues, from the several furnaces, are intended to meet and pass into a circular tower. Fig. 2 is a vertical section of the tower, taken through the middle, and in which two of the smelting furnaces are shewn, with their flues passing into the tower. In the construction of the furnaces themselves no improvement is claimed; but the combining of several together in the manner shewn is considered to be new. a, a, are the external walls of the tower, which must be lofty and capacious; its suitable dimensions depending upon the number of furnaces and flues intended to be connected thereto. When the flues of four furnaces lead into the tower, as shewn at fig. 1, its internal diameter may be about thirteen feet, and its height (commencing at the top of the ordinary chimney, at about thirty-six feet from the ground,) not less than twenty-four feet; but its being higher would answer better. The flues passing from the furnaces may discharge themselves into the central passages of the chimney at any desired height, as shewn by the dotted lines. It is found that smelting furnaces in general consume the greater part of their smoke, (except at the first igniting, before the furnace has arrived at a smelting heat); but, from the powerful draught, many of the noxious and pernicious particles pass through the flues, and escape into the air. To prevent this, the cap, b, is suspended |