worked with n mistriro of fclspir nntl fluorspar byt ~i c ovitlciitly iiinictl nt ccoiioiiiisiiig tlio Iiotnsli iii fcls mr niitl iiiny linvo siicccctlctl iii 60 doiiig, AliicL iiiorc Iicrtiiiciit to this Iinrt of tlio subjcct nrc tho cslicriiiicnts of JIr. I : . 0. \-cird niitl C'iilitaiii Wyiiniitr, wlio iii I)ecciiil,cr, I S ; . took oiit n 1i:itciit for whnt t h y cnllcil tlic "Cirlcilloric ,\tt:ick." 1: full ncctiiiiit or this ~~roccssnli~~enrcil i i i tho "llcports by the .I uric4 of tlic Iiitcrniitioiinl I~sliibitioii, 181if, cliiss ii., ]in::ca rlo to 54 ; iiiitl l:itcr, n coiiiliaiiy ivn3 fnriiictl t ! ! Iiiit it iii o1i~!r;itiiiii nt Coiiiinli's Qiiny, iicnr 1:liiit. llic object scciiix to Iinvc IJcen to cstrnct potnsli froiii the Iiriiiiitive rocks intlicr tlinii ti) iiinko nliiiii ; Iiiit I iiiii lioiiiiil to my tlint tho iiiqiiirica 1 linvc iiintlc (with tlic kiiitl nsjijkiicc of Jlr. 13iihtncc Cnrcy) seciii to show tlint tho ~firoiliictioii of Iiotnsli froiii tlic fclslintliic rocks wns niiytliiiig biit n coiiiiiicrcinl siiccchs. I I;itl it Iiccii worked coiitinuously oii n I n r p scdc, who Iiiiowj liiit tlint wo iiiight Iinvc lint1 by this tiiiic mst sttirw of litliiuiii, cnc-iiiiiii, riiliidiiiiii, niicl Iicrlinps otlicr yet iiiikiiowii nlknli-inctiils, coiicciitriitctl froiii tlic by-lirocliicts of siicli n iiiniiiiftictiircl 1:cvcrtiiiK IIOW to iiiy own cs icriiiiciitnl rcjiilts, two or tlircc Iioiiits of prnclicnl iiitcrcst iiiny bc iiieiitioiictl.