By 'tlfa simple nicnns the gnscs nru h d frolll tnr, nu1 tlicn nn exhauster drnws thcm oB, iind forces t l ~c gnr tlirough it Inrye lend-lirtctl rwlturntor in which tliu nntnioniii is nlieorhd by siilpliuric ncitl, tlic siilplintc fornicd h i i l g fmc froni tnrry mirttcr nntl of good qnnlity. Tho gns jfi tlion pnssctl on to 1110 I~iirncm, ~i i i l i * ~t l it ir mqnired to mniovo bciisol, nritl on1 tliun ni'o coolc~s nocosunry. ~~v c n tlwn no iittiittoitincit~tiqitorrr nrc f o r m i ! nnd nny conclensrd irntrr, fiinrc it contninfi no linw lilt^ cnn IIC used np for qiicncliiny cokc, ctc. Tlic Iiiescn of hnzol tliic to the nlJSOrp( ion i n tlic. st:nil~liing wiilcr iindcr ortlinnry cunclilions is nvoitletl, niitl nn incrcnsctl hnzol yicltl will tloul~tle~s l)n olJtninct1. If IJC-~IZO~ is not uxtrnctctl,-'no wntrr ifi i~ect-~~ciry for cooling. \rliicli i n the ortlinnry nirt.liotl is ii corisitlrnil~lu itcwi, iintl nlso t11c inltinl cost of tlic ~m~tliict plnnt is vcry nine11 cli~ol.cwwl. Sorenil Iilnnts tin t Itis system nre working at 1irosu11L in Gcrniniiy, nncl some iinclrr conatiiiatinn in t,liis c ~c i i i n l r y will soon IJC in olwrntion. lllitii~iitnti~ig !Itis frmii colic oi~~i~x.-Siiico colic: on* giis nppronclics vcry Iimrly to tlic qiiiilit.y of ortlitinry lighting giifi, tliu qiirstion IJf its iitiliHiition for tliis ~i i ~r j i t i ~~ litin been rniacl st rnrioiis tilnrn, nntl in Anicriw attwiipts linvr h c n Inntlc to nilopt coku ovt.118 for tlic liitr~~itw. Dr. Sclinic!wintl tins titvilt. with this cliicdon very fully i n ii IinIit't rrnrl Iic4onr tlic (:ns Ihgint~iw' Congrcsv a t Ulnsgoir in 1001, sIio\ving linw tlio qiin1it.y of the giis wries n t diNemnt tinws clnring tlio cnrlmtisntin1i Iwbrititl. Iteccrit ly nrriingcnicwts 11iivc Iici*n 11int11! witli ii vicw t o siiplilping ,11113 district of Little liulton in tliis counlrj 'l'liiri -1.. IIWYI. 1183. J 'I'lliri ,I,; INXI: Iliirlrrll 611. 4 'I'hi" .I.. I& c .rhr.