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Show Ul.ll UN fA.NS A I!W IMbtlaTltV JTIUII HIE LAIltlK I'lTIM. (trlr-atrlae Intheauburoe ot great cities an In-duttryliat In-duttryliat aprung up, having for III oblecithencovery of tno aolder uted liiinaklntaud tiallng tin oana. Ill contiqutiice tbe lormerly deaplted and uieleta tin can hat acquired aufll. clou' commercial value tu reacue It from the back lot dumping ground and ganaen icow. Under Iho ireient aritrm ofatrrot clranlog, New York City's refute le loaded on acuws from docks located at convenient Interval! along tbe river front, and then taken lo lea and dumped. Thtto doika liavo noubln decks, tbeupr projecting sufficient ly lo allow the comeiiU of a cart lo rill upon the inlddls ol the scow, ami be dleirlbilted by Iho trlmmert who keep the veatol on nil even keel. The trimmers alio eeltct evrrylhlug of value with the greatest care; rigs, fat, bone, metal, nxr stock, tic, Ivlug atoitd ou the lower dick of the dock. Thn silver and Jewelry fwrm ho small Hem of the contractor's profit, and the total value of a tcowlaad Is oattmatcd at an average ot JIMO, The e nee betauen tbo dock flat forms la ollen cloaed III with otda and ends, and Iho Interior converted into a niherable habitation by the Irtmuiere, men and women, who thui herl to uethvr, their euppllut being drawn fioiu thodump. These dum Ine docks are the prlncl-11 prlncl-11 source of supply lor the Inuuilry, and a wagon loal of tin cans can be bought at such places for four or five dollars. The furnace Is an old soap bollor, Into which a few sticks are thrown; tbe bowl Is then Tiled with cans, a quart of kerosene oured over them and Igullud, The hoit Developed by tb oil It not great enough lo attack the tin, but juella the solder, whlrh flows to the bottom of thn bowl. Tno solder re covered from a load of caus averages 4U pounds. After Ibis process Is com pleted tbe tin plate scrap Is sold to make what Is called 'acid.' Into a large open vat containing watte acid, acid ferrlo sulphate, aul phunoor hydrochloric ncld, the scrap is thrown and allowed tu remain until Ibe tin Is stripped from tbo Iron under. ueath; more strap and metallic Iron Is added uutll the polotloii Is neutral. Tbe tin thus dlisolved It uted as a basis for the preparation of stan natea or other llu compounds, and by dyers. The Iron plate Is rolled Into balls Ui melting, the ferrous sulphate purified and sold as commercial copperas, and Ih remaining acid uted la reetltlon of the procret. |
