Show A SVII Mhl llS IMI MION 1 11 Illici > eu Icciriiul sluice HOT iiinleitniiilnr fho following 13 from the liimij < IM Scientific Press of the 31 inst 1 dnanl Iiko of Sal Lake City has deuced certain cer-tain ntticliments to an ordmir sluice box or fume for sims 11110 gold nmnl guilt etc in which ho cliiins that tho amnlgaiiiiitioii is not dependent on tIle mere specific gravity of the precious precous met Us but Is I foictil one so as to same ni the float gobll is well is the coincr pirlicles 11ln nnj ordinal sluice box or flume nt atiy suitable ilnjlinco apart say yin feet or fa moro or less according to tho fill of tho box nllles of upper roimdei conligurition uro nrrined across flu bottom Inimcdi itcl below each of these rimes tho bottom of the sluice bo < c is cut out for a distance of from one to about three feet ill length und a quicksihertiejit box projecting from and bclou the bottom of the sluice ind l open above Is substituted for the cutout portion Ihcso boxes arc of n rev erne inclination to that of the sluice box Inrin m degree is the clnracter of the ore changes but in every instance being deeper ut what may be termed their upper end relatively to tho sluice box Above each of those false boxes at the botloin of the rimes atll 1 re Union Uni-on cleats secured to the sites of the sluice is double jierforited plate composed com-posed of duphc ito plates of iron 01 copper cop-per insulated from each other Mils 1 double plate in set inclining upvvutd in the downward direction of tho sluice leaving I mouth opening at its ruped end bet ecu the sluice and lobe box Tho imrforations in tlio doublo plate aio pre J fi I ferabU of increasing size below to give 1 a real clcirancc and prcvenl clogging by clay etc cny uhf the bottom of each fulao box Is al insulated amalgunatcil copper til itc lii i tl tlicao boxes the nmdcmlver is placed I am 1 I 1 their upper and lower pi lIlies are niBuIatci is described when it H dcMrc 1 to use nn electric current to expedite und nn I lovi the vvoik the two plates being con mctid with tile different parts of I bit tens Tin nillcH of hollow plates or Folllhalo I a lonndcd eluii e and mviIl give a forcu of fall that it iHclinncd vvil cfTectuillv hecuro the aniulniiiiatioii of free gold hI brinyi i in contact will the quicksilver I The boxes in tho bottom of the sluice or flume are fixed ones and ihle upper jierforitcd plate lull lower inchnei one with tlie quickbilvcr resting on the litter will secure the neeessarv am il tarnation give a proper distribution of the sand over the surface of Iho alibI ainiting chambers so is to MUI bile flour geld ind niimim The inclmei IItto I in the bottom of these falnc boxes lilly boused for conccntritinn I the ores ami r the l mouths ind I iwsition or arrmeo incut of Mid boxes with t llieir inclinei bottoms will servo to provi lo for the apparatus ap-paratus cloiriiu i elf of lint fdlnii through into it Ilia Micccssion of inui namating eh unboM and plates is intended in-tended to bo Hpeci dlv hcrviee ihlo where the Htrcim is a heivj 1 cine l us anv precious metal th it filled i tu t to tluon t l u tho flint crforutul pi lie would to through the next succeeding ones Iiiblcad of the upper jHsrforitcd plato heilig bet 10 incline roverhelj to tlio goner d bottom of Bireel his alnico I may ho set pirillol i I BireelWhen When clectneilv in ipplicd to iiromot Iho iiliulgiimitloii Iho double pale h > I being mule I comiiotiiid one as < Ic ecribeil uttil 1 connected it IH rc irils lie lower insulated plum cliiecllj orindiieell > with tho positive polo of tie hater > ali tliu bolloii tll intuit plate with the no uttvo polo the electric cnrrenl will bo eonfinCI to tho lreaU pssil tI1Jgh tile llxcd hones and not ho Heath re 1 or hII1 its fore linjuircd bj pissing ttl sought tho later in the entIre box When thohtn un is passing tlnontli tlio llxei K > XCB an < 1 the lower pi ito is eh irei 1 with negativi ohitrlcil > ami tho lowlr one of the upper doiiblo plutes with iosi i live etectrbeit3 the piccious melals an attracted to tliu nihillu tile liottoii plato ttiiul 1 tho base dc ire attrictclbj 119 till lower upper onu of tho HtcH I hIll this vMiler I filling thronnli complete itio circuit Onl > certain uf tho boxes ma1 bo ch ir II 1 or the whole of the in is in r 11 he dcnind i |