THE JOURNilL OF THE SOCIETY OF ClIEMIICAL IXDUSTBY. 9 coiit~icllctl to iisc tltcin wltctlicr Iic lilccd tlictii or not. 1 . 1 ~ would nsk tliciii fo coitsitlcr. ntrtl ivntcli tlrl: iicst. tiiiic t h y w r e trnvcllitig, \vltctlicr tlicrc wns ttot nti nl)soliitc ivniit of ii1ctit:il nritlitttctic OII tltc C'oiititictit i i t conscqucticc or this tlccitiial systcin ; wlicrens i n Kiiglniid t h y went itito n biitclicr's slioli niv! i~skctl Iio~v tiiucli n Iliccc of nicnt wcigliiiig slb. -!w. nt ti!,'cI. n lolllltl lvvns,nlltl tllcg\voliltl gct tItc:it1s\vcr 111 n 1IIO11ICllt. lr yoti wniitetl scictitific ncciiriicy iti n qrcgt !ti:iti p~nccs or ligurcs yoii ittiglit iisc tlccitiinls, nltltoiigil tlicii it ivns ittnccitrntc cotiilinrcd to viilg:ir frnctions ; hut if you wntitctl rnliiclity : I I I ~ C ~C ~~I I P S P , tnkc tltc ortliitnry w l y n r fr:icticiiis. I-Ton. ittntiy tltiigs tlierc $we on the prescnt systetii wliich were vcry easy. 111 his o ~i i Liisiiicsn for instance, if hc wniiterl to kiiow i~ic.\vciglit, of a Loiler p~ntc, if it wns :in. tliick'it \vns sib. to tlic foot, fin. 10111. t o tIic foot, niitl so on-that ivns qnitc iicnr cnougli. If IIC wniitcd to kiio\v tlic wciyht of round irnii, $11. \vns 1111. n fnot, ritttl :iity i i t i i i t l m of ciglitlts coiiltl cnsily bc ol)tiiitictl. J'on ottly ltntl to s q i i a ~~ tlic tlinnictcr tlivitlctl Iiy ZS, or niiiltiply 115' .I, niicl you got the ntisivcr iii ~iouiitls. If Iic ~mntctl to know wlint weight of w t c r fell ott 1\11 ncrc !I: kncw if iiti. fell oil nit ncrc tllcrc IVCI'C 101 tons. 1 hcrc wcrc I~utidrcds of siittilnr cnscs wliicli nicii who wcrc nt it nll tltcir livcs.kiicw wliicli ciiiiblctl Iiiiii, old ns Itc wns, nntl ltnritig lost the fncii1t.y of ittctitnl aritlititctic, to utitlcrtnkc to coiitpctc with ntiy dccittinl gctitlciiicii ott any ortlinnry nritltittcticnl 1,rollciii-iiot oii nccoiiiit of ntiy nbility of Itis O I ~I I , but 0 1 1 nccoiiitt, of usiitg n plniiil sititplc, ititclligil~lc itiotlu of tlcnlitt:: with figiircs iiistciitl of tltc cunibrous systctii of tlccitiinls.
Aftci: sotitc cotivcrsntioti ns to tltc bcst iiioclc of cs~~rcssitty tho vicws of tlic iticctittg,' i t was iiiinni-