Arkansas true Democrat., 1858-09-22
Coal OH.

Coal OH.
 We are in receipt of the second numher o, the Scientific Artisan" published in Gin. cinnati, at two dollars per annum. It is, as Its name imports, devoted to scientific subjects IS we'll illustrated, and no doubt would be useful to artisans and scientific men.
 A writer in the number received by us, has description of the methods of making coal oil. The writer states that
 "The quality of coal generally used in this country for the extraction of oils is the so- called Camel Coal" It is of very firm. compact structure. mostly of brownish- black color, and of slaty appearance, without lus- ter. This coal, which in Scotland i. called " Parrot Coal" burns with very brilliant light. and was in England sometimes used as substi. tute for candles, practice which has l,d to the now universally adopted name of Camel (can. | dle) Coal" l. does not soil the fingers when handled, and admits of being poi>hel; snuff boxes, bracelets and other ornaments having been made of t'
 After describing the process to which the coal is subjected, the writer gives the following as the products:
 The first liquid is Nplta, a very light, vola- tile, and highly nhammable oil; it is exten- slvely used for dlssolving caou.chnuc, or India Rubber; it is a highly recommended remedy for rheumatic pains, and when purified and redis- tiled, it is used to dissolve resins and gums for the manufacture of varnishes It can also be used for the extraction of perfumes from flow CTS. By different treatment this Naphta is converted into Benzole,' which oil promises to become of great commercial importance. Wool, silk and other fabrics can most eifectualv be cleaned from the adhering fatty oils and grease by simply sleeping them in 'Benzole.' In England, France and Germany this liquid is already very extensively used and preferred to alkaies, because Beezoe' does not impair the colors, and is free from any resinous impu- rltv. By treating Benzoe with nitric acid. | Miro BenzIe' is formed, which can be used as substitute for essence of bitter almonds in l perfumery
 | The next fluid coming from the still is light oil. now so extensively used der the names of Kerosene Caal OH' or Cu rJon OH' to burn in specially adapted lamps. This oil is not explosive, and, properly purife, has an agreeable odor. and burns without smoke. A time may not be distant 0tea seam botlers, on I,nF nnf seo, stoues, raaces, etc., aoW be Aeated byths .auN
 Wood when impregnated with this liquid, is preserved from decomposition. Redi'tiIled, another highly interesting article, Cre2s2te or CarBo7ic Acil,' is extracted, which possesses the extraordinary property of preserving meal, and o.ber bodes liable to decomposition from pntrefaction-a quality highly imp p,rtant to sur oery. sC,rbo1is Acid ided to tannn extracts, hitherto so dificnlt to keep, will prevent the same from separation. From Caroonic Acil another fluid is prolnced, CarJorzotic Acid, which gives a beautiful, permanent, straw- yeROo color to silks and other fabrics. The intense hitter of this acid has inducei physicians in London and Paris to try it as q feb.ifuge, and several cases of intermittent fever have been successfully treated.
 The third substance coming directly from the still is heavy fatty oil, which when properly refined. gives the Le5rjcating O1 now very ex- tensivelv used to grease machinery. This heavy oil, when exposed to cold. produces pqraffae or coc1-1oar, beautiful white substance, in scalv crystals; these are subjected to pressure and then nodded into candles, burning wi.h a most brilliant and steady white light, superior to any sperm or composition candles.
 From the heavy oil another interesting pro duct can be extracted namely, Kyanol' or Aay7ine, which gives with bleaching powder and another agent, most beautiful blue dye, equal if not superior. to indigo. By different treat me;nt fine red coloring agent is produced.
 The coke. which is left in the diStil, Is used as fuel, and. when for some time in contact with iron have found that bv q proper treatment, P1un5ago of superior quality can be made out of it.
 The Ammonja water formed also at the dis tillation. is bound by the suphate of lime, which is formed in the puriication of the oils, and, mixed with other very cheap ingredients, produces Gaqao of excellent quality.
 From this sketch the reader will be able to form an idea of the part KING COAL is bound to play, and how important the development of this branch of industry will become to the coal mining s ates, as tte erraction of oils wHi in future not be erc1aa0e'y confaed to Camel coal but ooM afso De- as IhaUe denaons'ratet by my o,oa ELECTRIC process er'ea'tst to tue btu- mjnous and eren anthracite coals."
 We use the coal oil referred to in the above article, and find that it gives cheap aud bril- liant light. Others who have tried it tell Us that they have abandoned its use, because of the difficulty of trimming the lamp, SD as to prevent them from smoking. A little practice and care soon obviates this difficulty, and the beautiful light amply repays us for the trouble.
 But what we wished to say in this connexion was, that camel coal is plentiful in Arkansas, and bitumnous coal is to be found in large luantities Some Of the latteris is so "rch' that it blazes until consumed, aal no doubt, the oils and other products of coal could be made more ch 'aply in this Sate than others The increas- ing demani for these articles makes it worth the while for scientific men to examine our facil ties and resources