CREOSOTE.
73
®S>cal discovery made by my son, which is likely to lead to a more successful treat-ei \t of some of the most formidable diseases of man, particularly gout and gravel,the preceding views be established, they will justify the instinctive love of man,^ ln d for tea, coffee, and cocoa, in spite of the denunciations and vetoes of neuropathic ,0n >aopathic, and hydropathic doctors ; sorry pathologists— hoc genus omne. bee Tea.
Coffee imported for consumption in 1839, 26,789,945 lbs.; in 1840, 28,664,341. NeteVe nue in 1839, 779,1151.; in 1840, 921,5511.
j COPAL and ANIME. Imported for consumption in 1839, 193,066 lbs.; in 1840,°Ii388 lbs.duty, 6s. per cwt., as upon gum arabic and tragacanth.
5 COPPER. Quantity of copper ore raised in Cornwall in the year 1838-1839, 159,-^ tons ; value of, 932,0901. 15s. 6 d.
Quantity raised in the year 1839-1840, 147,049 tons; value of, 792,7501. 14s.
• Quantity of metallic copper produced in the former year, 12,469 tons ; standard, 111 1. :11 Hte latter, 11,056; standard, 1081. 5s.
g Produce per cent., 7§ and 7j respectively. Average price per ton, 51. 17s. in thei and 51. 7s. 9d. in the second year.
^ Quantity of unwrought copper imported for home consumption in 1840, only 2J cwts.ee Metallic Statistics.
^ Copper MEDALS AND MEDALLIONS may be readily made in the followinga 7: Let black oxide of copper, in a fine powder, be reduced to the metallic state, byPosing it to a stream of hydrogen, in a gun-barrel, heated barely to redness. Theet alli c powder thus obtained is to be sifted through crape, upon the surface of theo ° u ld, to the thickness of j or J of an inch, and is then to be strongly pressed upon it,is ? by the band, an< l lastly by percussion with a hammer. The impression thus formed. beautiful; but it acquires much more solidity by exposure to a red heat, out of con-t c t With air. Such medals are said to have more tenacity than melted copper, and toe ^barply defined.
jj M. Bmttger proposes the following improvement upon the above plan of Mr. Osann :in» Spares tbe powder of copper easier and of better quality, by precipitating a boil-,>hot solution of sulphate of copper, with pieces of zinc, boiling the metallic powder0 a bs obtained with dilute sulphuric acid for a little, to remove all traces of the zinc or^5 l< lo, washing it next with water, and drying it in a tubulated retort by the heat of a- a l p r bath, while a stream of hydrogen is passed over it. This cupreous precipitatej “Besses so energetic an' affinity for oxygen, that it is difficult to prevent its passingc : ? the state of orange oxide. If it be mixed with one half its atomic weight of pre-lated sulphur, and the two be ground together, they combine very soon into sulphu-al copper with the evolution of light.
SUPPER, Purifying. —Copper may be purified by melting 100 parts of it with 10fjy ls of copper scales (black oxide), along with 10 parts of ground bottle-glass or other{£.*•_ Mr. Lewis Thompson, who received a gold medal from the Society of Arts forbe p 1I1Veil tion, says that after the copper has been kept in fusion for half an hour, it willwti° Un d at tlle bottom of the crucible perfectly pure; while the iron, lead, arsenic, &c.,a Which this metal is usually contaminated, will be oxidized by the scales, and willV a S0 * Ve in the flux, or be volatilized. Thus he has obtained perfectly pure copper fromc ent S ’ bell-metal, gun-metal, and several other alloys, containing from 4 up to 50 perbei iron, lead, antimony, bismuth, arsenic, &c. The scales of copper are cheap,ibe product of every large manufactory where that metal is worked.pbfiK. Unmanufactured, imported in 1840 for home consumption, 59,793 cwts.1 S L, 0R TEX PERUVIANUS, or CINCHONA. Imported for home consumption in
Cn4 3 ’ 705 lbs -
Hi u fTON maybe distinguished from linen in a cloth fabric by means of a goodsj lr j r ° Sc °pe; the former fibres being flat, riband-like, and more or less contorted oran( l the latter straight, round, and with cross knots at certain distances,a, str 6 ^rous matters may be also distinguished by the action at a boiling heat of
dig caustic ley, made by dissolving fused potash in its own weight of water. By0n m this liquor, linen yam becomes immediately yellow, while the cotton yarnbe w hite. The best way of operating is to immerse a square inch of the cloth totod for two minutes in the above boiling-hot caustic ley, to lift it out on a glass-J 1 * 688 it dry between folds of blotting-paper, and then to pull out a few of the warpc °tto e ft threads—when the linen ones will be found of a deep yellow tint, but theCfYr^ite or very pale yellow.
l&in i T ° N WOOL. Imported for home consumption in 1839, 352,000,277 lbs. j in
CRw?’ 142 ’ 743 lbs;
'reo, , S0TE - Having been employed by a chemical manufacturer to examine his1 fou ° e, and compare it with others with a view to the improvement of his process,er, ies tllat the article, as made by eminent houses, differed considerably in its prop-