INDEX.

Allex, A. J., 6S0.

Allon, J., 92.

Allothopic PnosriiORUS.— See Phosphorus , Red , or AUo -tropic.

Alloys. —Series of metals, and the alloys that may beobtained by mixing them, 13. Objects exhibited, and 'notice, by C. Jordan, stating the composition of the |different alloys, ib.

Alluaud, sen., 28, 542.

Almanac Clocks. —See Clocks.

Almeida, Dr. D’, 597.

Almeida, Messrs., 122, 133.

Almeida, Praenca, 84.

Almeida, Silva, and Co., 84.

Almeria, Province of (Spain ), 84.

Almond Oil. See Oils.

Alner, A., cxx.

Aloe Fibre— Samples of, from Barbadoes , 102; from theCape of Good Hope , ib.

Aloes, Extract of, 50. ;

Alois. —The cathartic principle of aloes, 49. ’

Alost, M. d\ 406. _ ,

Alpaca Manufactures— Specimens of, exhibited, 356,357. ;Importance and rapid development of this manufacture, :374.

Alpaca Yarns. —See Yarns.

Alsop, Robins, and Co., 364.

Alston Moor (Cumberland).—Brown haematite and car-bonate of iron existing in large quantities, 7. Section :of the Alston Moor Mines, illustrating the lead veins, i11 .

Alther, J. C., 470.

Altitude Instruments. —See Astronomical Instruments.Alum. —Antiquity of the manufacture of alum and cop- !peras from the pyritous schists of the coal formation, i42. Considerable improvements of late years, ib. Par- iticulars as to the processes pursued, ib. *' Concentrated :alum,” ib. Mode in which the Rhenish alum is ob-tained, 43. Specimens of alum referred to, 21, 35, 43, i44, 45-50. i

Alum (or "White) Leather.— See Leather, &rc. \

Alumina, Sulphate of— Has become a considerable manu- jfacture under the name of “ concentrated alum,” 42. :

Alvargonzalcez, R., 641. j

Alvean, Juan d’, 57. I

Alvera, B. G , 61.

Alverez, C. D. S., 84.

Alvcrt, J. V., 679.

Amadou (or German tinder).—Specimens of prepared ama- jdou, 104. ;

Amand, J., 22. ;

Aman and Egli, 367.

“ Amazon attacked by a Tiger” (sculpture). — Notice of jthis work, 634, 697, 707. J

Amber —Is found associated with certain lignites, and is tole-rably abundant, 32. Rarity of transparent specimens of jfine colour, ib. Prussia the only country furnishing ;them for commercial purposes, ib. Collected chiefly ion the shores of the Baltic; specimens exhibited, ib. ISpecimens of yellow amber necklaces, 520. Necklaces, !brooches, and articles for dressing-cases in lemon- jcoloured amber, ib. Extensive use of this material for ithe manufacture of mouth-pieces for pipes, 670. High jprice of mouth-pieces in the blast, ib. Current belief in jTurkey that amber is incapable of transmitting in fee- ition. ib. In Europe , ivory, bone, and horn have to some Iextent usurped the place of the more costly material, ib.Amber much employed for beads, brooches, ear-rings, i&c., ib. Coarser descriptions and chips employed for ,the manufacture of varnish, amber oils, anil succinic \acids, ib. Occasional substitution of copal for amber,ib. No difficulty in distinguishing between the two by |a chemical analysis, ib. Remarks on the chemical cha-racters of amber, ib. Mode of obtaining amber pecu-liarly interesting, ib. Terrestrial and marine amber,ib. Evidences of the extreme antiquity of amber, ib.Variety of amber most valuable, 670, 671. Doublemeaning of “ Electron ” (amber) used by the ancient jauthors, 671. Specimens of amber mouth-picces from :Slates of Gennany, ib. Splendid mouth-pieces fromPersia and Turkey, 672. Extraordinary value of those ;from Turkey, ib. Various amber manufactures coutri- !buted, names of exhibitors, and awards, 672, 673. ■

Ambrose, J., 580.

America , North.— Collection of woods, native of, or grown jin, 114-116. See also Canada. New Brunswick. NovaScotia. United States of America . j

America , South— Collection of woods, native of. or grownin, 118, 119, 147.

Ameye-Berte, R.. 372.

Amherst (East Indies)— Collection of the woods of, con-tributed by the Indian Government, 135, 136.

Ammonia. —Importance of ammonia to agriculture, 40.

Ammonia, Benzoate of— Specimens of, 43.

Ammonia, Carbonate of —Method of preparation thereof,46. Specimens of, 45.

Ammonia, Hvduochlokate of —Specimens of, 45.

Ammonia, Nitrate of— Specimens of, 45.

Ammonia, Salts of —Specimens of, 44, 45.

Ammonia, Sulphate of.— Process of production thereof, itsvalue per ton, and for what purposes useful, 43. Spe-cimens of this sulphate, 45, 50.

Ammon iacal Salts —Prepared from urine for manuringpurposes, 45.

Amos, C. E., 235.

Amoskeag Manufacturing Company (United States ), 348.

Amuller, E. F., 581.

Anastatic Printing —Specimens of, noticed, 6S3.

Anamorphosis —Instruments for illustrating. See Per-spective.

Anatomical Models. —See Models, Anatomical.

Anchors. —Remarkable improvements in the form and pro-portions of, 210, 218.

Ancion and Co., 221.

Andelle, G., and Co., 536.

Anderegg, T., 348.

Anderson, D. and J., 348.

Anderson, G., and Co., 63.

Anderson, Sir J. (Juror), xxv. xxviii, xxxi.

Anderson, T. (Associate Juror), xxvi.

Andrassy, Count G., 21.—See also Iron .

Andre, J. P. V., 499, 500, 501.

Andreae, C., 365.

Andrews, M., 371.

Andrews, R., 193.

Anemometers. — Self-registering anemometer and raingauge, 302. Principle of construction, ib. Furnishedwith paper for the consumption of a month, ib. Ane-mometer exhibited, designed for coal-pits and hos-pitals, 302. Small travelling anemometer from Bel-gium , ib.

Angcll, G., 520.

Angell, J., 516.

Angers Slate Company (France ), 28, 559.

Angle Meters. —Various, exhibited, 316.

Angola , Governor of, xlv, 153.

Angraiul, —, 404, 448, 451.

Angrane Brothers, 478.

Animal Kingdom . — Report on the animal substancesused in manufactures, 157. 1st. For textile fabricsand clothing: "Wool; general remarks ; specimens ex-hibited from various countries, exhibitors, and awards,157-159. Hair and bristles: notices on the exhi-bits, exhibitors, and awards, 160. Whalebone: spe-cimens exhibited and awards, ib. Silk: general re-marks; specimens exhibited and awards 160-163.Feathers and down: articles exhibited, exhibitors, andawards, 163.—2nd. For domestic or ornamental pur-poses, or for the manufacture of implements, 163,et scq. Oils, wax, &c. : notices on the exhibits, awards,&c., 163. Horns and antlers: remarks on the ob-jects exhibited, ib. Ivory: observations, exhibits,and awards, 164. Tortoiseshell: articles exhibited,ib. Pearls : specimens exhibited, ib. Mother of pearlor nacre: articles exhibited, exhibitors,and awards, ib.Cameo shells and corals: exhibits, &c., ib. Sponges:specimens exhibited and awards, ib. Goldbeaters’skin: specimens thereof, 165.—3rd. As agents in themanufacture of various articles, ib. Gelatines, isin-glass, and glues: countries from which contributed,specimens exhibited, names of exhibitors, and awardsgranted, 165, 166. Animal charcoal, bone black andivory black: specimens exhibited, &c., 166. — 4th. Forpigments and dyes, ib. Cochineal and carmine:countries from which contributed, exhibits, andawards, ib.

Animal and Vegetable Substances used in Manufac-tures (Class IV.)—Classification of objects, vii. Listof Jurors, xxvi. Exhibitors to whom Council Medalshave been awarded, xlv. Prize Medals, xlv-xlix. Ho-nourable Mention, xlix-liv. The relative excellence ofthe **Raw Materials” from the vegetable and animalkingdoms, in the Exhibition, due rather to peculiaritiesof soil and 6ky than to the individual merits of the