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manufactured in this country. For these, precipitate will instantly appear. This Dr. BREWSTER has succeeded in obtain. is a more decisive test than sulphate of ing a substitute, in a delicate fibre copper, which forms Scheele’s-green, which enables the observer to remove (arseniate of copper) and though the the error of intlection, while it possesses process answers very well with potash or the requisite properties of opacity and lime-water, yet Mr. Hume is inclined elasticity. This fibre is made of glass, to prefer the common sub-carbonate of which is so exceedingly elastic that it soda. may be drawn to any degree of fineness, A correspondent of the Philosophical and can always be procured and pre- Magazine, taking into consideration the pared with facility. This vitreous fibre, present imperfect mode of finding the when drawn from a hollow glass tube, of time-keepers, suggests the will also he of a tubular structure, and establishment of a public observatory' its interior diameter may always be for trying time-keepers and keeping regulated by that of the original tube. their rates, to which every maker, if he When the fibre is formed and stretched thought proper, might have access at across the diaphragm of the eye-piece of stated hours, and where he might be ala telescope, it will appear perfectly lowed always to keep a certain limited opaque, with a delicate ime of light ex number of pieces. Here he might try tending along its axis. As this central the effect of improvements and gain extransparency arises from the transmis- perience; then alter and try again till sion of the incident light through the he succeeded to his mind; an advan. axis of the hollow tube, and this tube tage which he could not, perliaps, enjoy can be made of any calibre, the dia- in his own house, for want of ivstrumeter of the luminous streak can be ments of sufficient accuracy and leisure either increased or diminished. to make the necessary computations. A micrometer fitted up in this way by Dr. book containing the rate of each timeBrewster, the glass fibres are about keeper mighi be kept always ready for the 17oo of an inch in diameter; and the use of the owner, and, if he thought profrnige of light is distinctly visible, though per, for the inspection of the public, by it does not exceed Jooo of an inch. In which he would he enabled to ix a price using these fibres for measuring the on the machine, proportioned to the exangle subtended by two luminous points, cellence of its going. From this place the fibres may be separated, as hitherto captains of ships and others might als done, till the luminous points are in ways be furnished with timekeepers, contact with the interior surfaces; but, suitable to the price they could afford, or in order to avoid the error arising from adapted, with respect to accuracy of infection, it is proposed to separate the going, to the purposes for which they fibres, till the rays of light issuing from might be required. The writer expresses the Juminous points dart throngh the his surprize that, cousidering the many transparent axis of the fibres. The rays evident advantages of such an instituthus transmitted evidently suffer no in- tion, the watch-makers have not already flection, in passing through the fibre to established one at their own expense. the eye; and, besides this advantage, That valuable plant, smyrna madder, the observer has the benefit of a deli- has lately been introduced into this cate line, about one-third of the dia. country by Mr. SPENCER SMITH, wbo meter of the Gbre itself.
furnished the Society of Arts with some Mr. Joseph HIUME has discovered a seed; from which Mr. Salisbury, of the new method of detecting arsenic. The Botanic Garden, Sloane-street, has raised test which he proposes as a substitute plants that have grown in the inust profor those hitherto used, appears to be mising inanner. fle expects to obtanu more efficacious, inasmuch as it pro- seed froin them, and there is every duces a more copious precipitate from reason to hope that tiris useful dye-root a given quantity of that substance. It will becoine naturalized in our soil. is composed in the following manner : When the French siezed Liege, the Let one grain of white oxide of arsenic, gentlemen belonging to the seminary and the same quantity of carbonate of of that place were obliged to make a precisoda, be dissolved by boiling in ten or pitate retreat, abandoning a large estatwelve ounces of distilled water, which blishment, together with a valuable lio onght to be done in a glass vessel; to brary and a fine collection of mathe- , this, let a small quantity of the nitrate inatical instruments. Having since of silver be added, and a bright yellow found an asylum in this country, they
have forined an establishment at Stony- of bricks broken into acute-angled frage
.composed of M. VAUQUELIN has examined the Line
69.3 root of a species of polypody, known by Phosphoric Acid 28.3 the appellation of calaguala. Of the Water
11. substances which compose it, only those
4.6 soluble in alcohol and water are capable Carbonate of Lime
4.5 of producing any effect on the aniinal Bituminous Matter
4.4 economy. These are saccharine mat Ferriferous Quartz Sand ter, mucilage, muriate of potash and Phosphate of Maynesia
1. resin, which last he conjectures would Alumine
0.7 be found to destroy the tape-worin. He Oxide of Iron
0.5 has likewise made similar experiments on the roots of the cominon polypody
100. and male fern, and obtained from them precisely similar principles and nearly According to a report made to the Nain the same proportions as from the tional Institute, M. DouFOURGERAIS, calaguala. The former roots, however, optician to the Emperor Napoleon, has contain a small quantity of tannin. produced a ponderous flint glass, inThus the analogy cat organization, which tended for the manufacture of achroled Jussieu and Richard to conclude, matic glasses, in which he has attained that the medicinal virtues of the cala- the highest degree of perfection ever guala-root must be similar to those of attained by those of English manufac. other terns, is fully confirmed by che ture. The glass made by him is heavier mical analysis.
than Aint-glass; its specific gravity being The following method of making ar- 3,588, while the beaviest flint-glass is tificial stune in the vicinity of Dunkirk only 3,329.. has been published by M. BERTRAND:The materials employed for this purpose Dr. Jann, of Berlin, has lately de. are the ruins of the citadel, consisting scribed and analysed an oriental tur, of line, bricks, and sand. These are quoise from Visiapour, near Khorasan, broken to pieces by means of a mili which he found to contain:formed of iwo stone wheels following Alumine
73. each other ard drawn by a horse. Wa.
Oxide of copper
4.5 ter is added, and the matter when well
Iron ground is reddish. This is put into a
18. trough and kept solt by means of water. When the trough is full, some line is
99.5 burned and slaked by leaving it exposed to the air, and this mised in the pro
This result verifies that obtained by portion of one-eighth with the above Lowitz, and proves the existence of two cement. A woodien mould is laid on the distinct species of the turquoise. stone, and after a thin layer of sand has Dr. Jabo likewise conceives that he been thrown on the latter to prevent has found a new volatile and acidifiable the adhesion of the cement, a layer of metal in the grey ore of manganese from cement is poured in, and on this a layer Saxony. He obtained it by distilling
the ore with 'sulphuric acid. The vola- dred pounds shall be appropriated to tile metallic acid combines with a weak the offering of such preiniums, as shall solution of potash put into the receiver, appear to be conducive to the benefit and tinges it crimson. From this red of the colony, and of the British inliquor, gallic acid, or infusion of galls, terests in Africa ; the following are prothrows down a chesnut-brown precipi- posed: To each of the six Kroomen, tate. Prussiates immediately change the who shall“ first introduce their wives red colour to a fine lemon yellow, but and families into this colony, and shall without any precipitation. The car- live with them in one or more distinct. bonates do not precipitate the red solu- houses to each family, and cultivate not tion; but if it be heated with a little less than two acres of ground for two alcohol, the red colour changes to a years; five guineas. To the person, regreen; a smell of ether is given out, and siding within the colony, who, on the then the carbonates throw down a brown 1st of January, 1811, shall exhibit the oxide, which is soluble in muriatic best bull, his own property; five guiacid.
To the person, who, on the same M. KLAPROTH has discovered in mi- day, shall be proved to have most effecca sixteen per cent. of potash.
tually applied himself to the art of a M. Bucholz has found that the schor- sadule, collar, or barness-maker; five liform beryl of Bavaria, is a true beryl, guineas. To the person, who, on the containing 0.12 of glucine.
1st of January, 1810. shall produce the
most complete cart or waggon, his own The following particulars are the latest manufacture, on two or more wheels, accounts that have been received of the to be drawn by two or inore oxen; five state of the colony of Sierra Leone:- guineas. To the person, who, on the A number of plants received from the 1st of January, 1810, shall be proved to African institution, among which are have most constantly and effectually the vine and white and red mulberries, employed oxen for riding, and to have are in a flourishing condition. The prin- broken the greatest number of oxen for cipal danger seems to be of their being the saddle; five guineas. To the per. exhausted by too rapid a growth. A son, who, on the 1st of January, 1810, piece of ground is in clearing, on the shall be possessed of the greatest numhighest part of the neighbouring moun her of turkey-hens, not less than twenty-tains, for the sake of trying a more tem- five; five guineas. To the person, who,
The employment of on the 1st of January, 1811, shall be oxen in draught has been attended, in proved to have most effectually applied this colony, with great success. The himself to the trade of a tile-maker; five draugħt oxen have been fed ou cassada, guineas. To the person, who, on the and have been found to improve under 1st of January, 1811, shall have cultitheir labour', and to produce better beef vated the greatest quantity of tobacco, than any other cattle. The bark of the not less than four acres; five guineas. inangrore, of which a specimen was. To the person, who, on the 1st of Jalalely ordered by the African Institu. nuary, 1811, shall have cultivated the tion, has been tried in this colony, in greatest quantity of rice, of the kind consequence of the suggestion of the called by the natives of Africa, White institution; and, as far as can be colo' Man's Rice, not less than six acres; five lected froin the small scale on which the guineas. To the person, who, on the experiment has been made, it appears 1st of January, 1811, shall have cultito answer the same purposes as oako vated the greatest quantity of ground bark in tanning. A road is in consi- nuts, not less than six acres; five guiderable forwardness towards a favour- neas To the person who shall first inable situation on the banks of the largest troduce into this colony, a living elestream of water known to exist within phant; a gold medal 'value ten guineaş, the colony, where the soil appears su or the same siin money. To the perior to any in the neighbourhood of person, who shall first introduce into the present settlement, and likely to be this colony, a male and female camel, or favourable to the growth of hemp. dromedary, fit for breeding, 'or two perCarriage roads have also been made fect young ones of the same animals, within the town of George-town, and male and female; a gold medal value ten measures have been taken for improving guineas, or that sum in money. It will the watering-place. The governor have give pleasure to every liberal mind to ing resolved, that the sum of one hun- learn that the natives of Africa are
greatly improved in personal appearance succeeded to the frown of insolent suspi.
MONTHLY RETROSPECT OF THE FINE ARTS.
under Cover to the Care of the Publisher.
the Marquis of Stafford. The engraver
has caught the style and manner of the (Continued from our last.)
painter with much success, and the water The celebrated Roman is particularly excellent and characteristić. N°iribuime desperate Effort against his own Soldicra,' vent dilation on these subjects, they who attacked and murdered him in a nar must therefore be brief and only catch a row puss, by Haydon; is a very successful transient view of a few of the best. In effort in the highest line of art. (No. 293) the library is a view of the Albion FireFallen Angels, by Simpson, is a spirited office, New Bridge-streer, which is excelsketch, full of vigour, mind, and much lently drawn, but rather feeble in the shit anatomical knowledge. The drawings of dows. No.555, are foursmall whole lengths Portraits, by Pops and EDRIDGE, and of great originality of style and felicity of the exquisite enamels, by Bone, are beau- execution, by Harlow; they are of Sir ful, and excite, as they deserve, much Robert Kerr Porter, in the costume of his admiration. Bromley's sketch of an As. order of knighthood, his interesting sister cension (No. 331) is in a grand style, Miss Porter, Miss E. Thomas, and a and displays much novelty of invention. gentleman, (said to be the artist) in the Mackenzie's drawings of St. George's character of Henry the fifth. Chapel, Windsor, (Nos. 338 and 353) are. The miniatures are numerous and of correctly and elaborately finished. Gan increased merit. Among the best are dy's Architectural Illustration ofan ancient (No. 603) Mr. Kinlock, by Robertson. Sea-port(No 359) is magnificentin design; (No. 616) Sir T. Gaye, Bart. by Haines, and clear and brilliant in execution. His who has several of equal merit both in Rosslyn Chapel (No. 325) is beautifully freedom of style and breadth of colouring, drawn, but too ideal in colouriog and (No. 617) Professor Carlisle, by Newton. finishing for a real view. In the room (No. 629) Mr. Wilkie and two others, called the Antique Academy, there are by Robertson. (No. 642) Dr Thornton, Iwo beautiful portraits by Westall. Mas by Newton. (No.684) Mr. C. Keinble, ter Clark, (No.441) as a Bacchus; that by Pope; of more than ordinary merit, independent of individual resemblance, indeed it may be considered as the best is a charming composition; and of Mrs. miniature in the room. (No. 711) Dr. Clark, (No. 506) as a Bacchante; pos. Glasse and Mrs. G. H. Glasse, by Mursessing the same claim to praise._(No. phy. A frane of enamels, by Hune (No. 444,) The grotto of the Nymph Egeria, 712). near Rome : the modern Romuns in Procession on Alay-dur, honoring the This department of the Fine Arts exmemory of the Goddess with recitation, hibits rather a smaller number of submusic, und dancing, by Frearson, is a jects than usual, but of unusual merit. characteristic classical picture, finely (No. 758.) A small model of the figure jinagined and no less delicately executed. executed in stone for the Hope Insurance Mr. Heath's engraving of the goud Shep: Company, Ludgate-hill, by Bubb, is a herci, froin Murillo, No. 479) is a power- vigorous boldly imagined design, wellful specimen of the power of the burin; executed, but rather too masculine for as is (No: 480) a brisk Gale, by Filier, the idea of " Hope with eye so fair."
No. 763 is a basso-rilievo, designed to piety, pervades the whole figure; it ap
the death of General poars a personification of a pure chaste M'Pherson, of Charles Town, South Ch female soul, just clothed in angelic perrolina, who was ship vrecked in a storinfection, beaming with resignation to its of New York, on the 24th of August creator's fiat. Thy will be done.” The 1306. After rescuing his daugliter three execution is so transcendant tmes from the waves, he was washed o erboard and disappeared. The life of
“So turn'd each limb, so'swelled with softenMiss N'Pherson was afterwards pre. That the deluded eye the marble doubts
ing art, s ived by one of the passengers. DEVAERE.
Thomson. Astras concerns execution, this meinorial of an uncommon act of paternal The alto rilievos by the same artist (Nos. love and heroism is well executed, and 821 and 831,) possess the same characterthe design good; but the subject is to istics of a cultivated and vigorous mind tally unfit for sculpture. The same out as the preceding. Mr. Westmacott's line when sketched on paper, would boy in bronze, part of a groupe, at the doubtlessly fill up well in chiaro-scuro base, to the statue execating of the late' and keeping;'or would be a good subject Duke of Bedford, and which is now for a picture ; but when perspective, erecting in Russel-squire, shall be omitclouds, distance, and the other necessary ted tillit joins its groupe, when its sculprequisites for a picture, are cut in mara tural merit can be better canvassed. As ble, and is a basso-rilievo they are either a bronze cast it appears perfect, and to totally unmeaning in themselves, or inefo have come from ide mould with much fective in their end. These are the fail success. igs of the present subject. Mr. Devaere his done justice to eich individual part, of the architectural department this bat the whole anns at were than sculpo year, much cannot be said in praise. It ture can express.
by no means keeps, pace with painting or No. 759, by Theakston, a design for sculpture, which may be attributed to. a pnblic monument, is impressive and
Patronage, encouragewell imagined. Mr. Garrard's model for ment, a good school, are among the
many a statue of the late Mr. Pitt, in the desiderata which this ekler of the sister, master of arts gown, (No. 760), made at arts, lamentably feels. The worst and the: the request of the Cambridge committee, darkest roon; 10 lectures for nearly the. possesses an air of elevation, and dignity last ten years; no guide or keeper of the of pind; highly characteristic of the ora architectural students; a limited use terical powers of the departed siatesman (almost approaching to a prohibition) of it represents. Mr. Turnerelli's busts are a goud library; no models; no instrucin a chaste and simple style, and are said tions; are the bounties of a Royal Aca-, to possess the additional recommendation demy of Painting, Sculpture, and Archiof goor likenesses. His figure of' Vesia tecture, towards one of its professed (No 777) for a Candelabrum is, in design adopted children. The consequence is, and execution, excellent and appropriate. that, the introduction of novelties, lowThe limits of this department will not ever vague, inelegant, and bizarre, have allow of all to be mentioned that deserve been sought for by the architectural stupraise, but no excuse could palliate the dents; and such is the character of this, omission of No. 317, by Flaxman, Resig- and the last six exhibitions, witii only a nation; u stalue in marble, which is few exceptions. Heaviness, clumsiness, said to be part of a groupe to the 'me the worst parts of the Roman spotiation mory of the Baring family. It makes the of Greciaii elegance, were the chạracmindinsensibly revert to Ancient Greece; teristics of British architects, from Pain so much simple majestic beauty 'does it and Gibhs, vill the time of Chambers and possess, so much opposite merit does it Stuart; the former of wharry purified exbibit to the corrupt source of Bernini's the one, and the latter restored and gave. school of modern sculpture, which, till' 'to his admiring countrymen, the purest the days of Flaxman, pervaded more or draughts from the stream of Grecian and less every sculptor from Bèrnini to Rou. intellectual retinement, in the art. All bi ac; that it may be considered as the migbr theit have been well, but for the perfect seal and type of sculptural refor- unaccountable negligence of the cultiinition, the complete emancipation of vation of the taste çf the present race of genius from the trammels of ignorance growing architects. and superstition. Piety, calm unattected Wyat, Dance, Milne, and Svane, have