122
Class 1.—MINING AND MINERAL PRODUCTS.South Side—Areas S. 1 to S. 27.
[United
12 Webb, —, Calcot Farm, Reading —Producer.
Portion of a fossil silicified tree from the sand. Thehorn of an ox dug up from the peat.
13 Ellis, R., Harrowgate —Producer.
Collection of the different mineral waters of Harrow-gate, and their analyses.
14 Tennant, James, 149 Strand— Mineralogist.
Four cases of minerals and fossils for educational,
scientific, and ornamental purposes.
A magnificent and gigantic crystal of emerald, the pro-perty of His Grace the Duke of Devonshire, by whosepermission it is exhibited.
[This collection includes, among other objects, a seriesof crystals of gems of very great interest, illustrating themode in which such objects are found and maybe dis-tinguished. It also exhibits a series of fossils useful inidentifying rocks.—D. T. A.]
15 Nelis, John, Omagh , County Tyrone, Ireland —
Proprietor.
Pearls, with specimens of the shells in which they areformed ; found in the deepest parts of the river Strule(fresh water), at the town of Omagh , county Tyrone.
[The shell-fish from which these specimens of nativepearl are derived is the Unto margaritifera, and the pearlsare second only in quality to those obtained from thetrue pearl-oyster, Meleagrina margaritifera. Pearl con-sists of concentric layers of membrane and carbonate oflime, and is partially soluble in acid.—E. F.]
16 Cowie, A., & Rae, W», Ellon , Scotland —
Proprietors.
Pearls from the river Ythan, Aberdeenshire.
17 Horne, —, Camberwell —Producer.
Petrified eggs and nest from Goree Island, west coast of North Africa , lat. 63° 13'.
18 Mayo, William, 17 Silver Street, Wood Street, Cheapside—Inventor.
Glass pipes for the conveyance of aqueous or aeriformfluids. The novelty consists in the invention of a perfectjoint. A metallic flange is firmly attached to the ends ofthe pipes without the use of any cement; the flanges areabutted, and secured together by screw couplings. Bymeans of these joints, glass pipes can be laid down by anyordinary workman; they can be altered, extended, orremoved at pleasure, the same joints being available forany length of time.
The glass pipes and joints exhibited are manufacturedby Swinburne and Co., South Shields ; the patentees,Mayo and Warmington.
18 a Lowry, J. W.—Producer.
[9 Cook, A.—Proprietor.
A large crystal of black quartz. (Batten, A., Agent.)
20 Macdonald, Major C.—Proprietor.
A large series of turquoises in the matrix, in unpolishedfragments, and manufactured into various ornaments.
[Turquoise is a well-marked mineral of a peculiar bluecolour—opaque, or only slightly translucent at the edge;it is hard, and takes a good polish, infusible, and un-affected by acids. It is a hydrous phosphate of alumina,with a little oxide of copper as the colouring matter. Itoccurs chiefly in rounded lumps in Persia and Arabia.Large lumps are rarely pure, and the price is about thatof the opal. False turquoises are common, and are manu-
factured of the teeth of animals coloured by phosphateof iron. They are much less hard than the true stone.—D. T. A.J
21 Oldfield, Rev. —, Dublin —Proprietor.
A mass of crystalline quartz adapted for various usefuland ornamental purposes.
22 Tolan, W.—Producer.
A collection of polished agates from the Isle of Wight .
[These Isle of Wight agates resemble those found onthe Sussex coast, and exhibited by Mr. Dyer (10). Thefinest agates are from Oberstein (near a village of thatname in the palatinate of Bavaria , situated on the riverof Nahe, which enters the Rhine at Bingen ), and fromIndia . Very beautiful specimens of the latter are ex-hibited by the East India Company.—D. T. A.]
23 Highley, Samuel, jun., 32 Fleet Street —
Collector and Preparer.
Sulphur Minerals.
1. Native sulphur in rhombic crystals, from Sicily.
2. Native massive sulphur.
3. Native earthy sulphur.
4. Iron pyrites, orsulphuretof iron, from Cornwall , &c.
5. White iron pyrites, from Littmitz, near Carlsbad.
6. Radiated pyi’ites, from the chalk of Surrey and Isle of Wight.
7. Cockscomb pyrites, from Derbyshire.
8. Copper pyrites in crystals, from the Banat , &c.
9. Copper pyrites massive, from Staffordshire , &c.
Crude Sulphur of Commerce.
10. Crude Sicilian sulphur.
11. Crude drop sulphur.
12. Lump sulphur.
13. Roll sulphur.
14. Sublimed sulphur.
15. Sulphur vivum.
16 and 17. Sulphur precipitation, pure and (17) adul-terated.
18. Crystals of sulphur from its solution in bi-sulphideof carbon.
19. Crystals from solutions of sulphur in campliine,made at tempei’atures varying from 77° cent. = 170 6°Falit. to 138° cent. = 280-4° Faht.
20. Crystals of sulphur deposited from sulpho-penta-chloride of phosphorus.
21. Crystals obtained by the fusion of sulphur.
[Sulphur occurs native, in rhombic crystals; also mas-sive with earthy and bituminous impurities, and occa-sionally with arsenic and selenium. It is generally foundin volcanic districts and near hot springs in formations ofvarious geological date. It occurs abundantly with ironand copper (iron and copper pyrites), and also with thecommon ores of lead, &c. It is used in chemical manu-factures and in medicine; also for matches and gun-powder ; and in preparing vermilion, sulphuric acid,vulcanised caoutchouc, &e. About 80,000 tons of crudesulphur are annually furnished from Sicily.—D. T. A.]
24 Thistletiiwayte, Henry F., The Vine House,
Seeenoaks , Kent —Producer.
A collection of gems and precious stones, chiefly illustrative of such as are used for personal ornament. Theprincipal part of this collection was formed by Mr. Hertz,with a, view to show the great variety of shades ofcolour in each species of stone, and to prove the connectionof some classes; such as the corundum, where the tintsof the ruby, sapphire, and topaz, are distinctly seen inthe same stone. In the class of zircons and jargoons, thesame connection of colours is exhibited. The specimensot diamond are interesting in point of crystallization as