01' metnmorphosecl mntcrinl, it will bc printed in sonic permanent mnniicr. Our daily n e w we cnn hiivc by rvireless, that will scire twenty tlionsnnd toiis n yen r : our parcels cnii bc wnppcd up in lead foil, it is dcsirnblc t o iiicrcnsc tlie deninncl for lend : since the liospit,nls took t o collecting lcncl foil and getting it re-smclted the price of lcnd Iins clroppcd froin f30 t o 222 n ton : artificial silk stockings will becoiiie dearer tlinn nnturnl silk ; still the scientific jouriinls, tlic \mckly chcmicnl ones a t niiy mtc, will be circulnted and kept for refcrcncc. Wc arc not sure ivlio first conipnrcd tlic ctlitor, cudgelling liis brain for sonictliiiig to sny, to tlic spitlcr pro(111cing n thread hy spinning its own entrails, but the mention of iinturnl sill; nnturnlly brings tliis s:iyitig t o tlic mind, mid ns oiic t.liouglit lends on to nnotlicr, it may be suggcstcd that n frcsli topic should iiow lie chosen for n frcsli effort.
Mathematics in Chemistry
That dcpartmcnt of chemistry, nncl it is iili importniit one, ~vliicli is nil csiict, scieiicc, is iiecessarily invol\wl witli mnthenintics, rind thcrc are very iiiririy portions of physicnl and t,licoret,icnl chciiiistry wliicli require :I knowledge of nlgclm, trigoiionictry, iiud tlic difTerciit,iirl C~ICUIIIS, nncl n fcw in ivliicli the intcgrnl cnlciiliis is necessary. A11 tjlicsc varictics of Iiighcr mntliciii:itics were invcnted to do with case w1i:it could bc tloiic witliout tlieiii only with the greiitest tlifiiciilty : t,lie elementnry stages.arc ensy to lcnrii tincl, with tlic csccption of tlic integral C~ICUIIIS, easy to use. The p p c r wc pnblisli tliis weck by Nr. 8. I<. Tiveccly gives nri exmiiple of nil easy way of solving, with an nccuriicy equal to tlic errors of experiment, eqiint,ioiis of ii type coninion i n cliemistry, but. very difficult to solve by the usuiil gcoiiietricnl or nlgebrnicnl methods. A siuiilnr method enables tlic cnlculntion of lognrithnis to bc ciisily performed, so cnsily tliiit. atf seaside plnccs wlicrc tlierc is iiotliiiig to do wc I i n w often ivliiled aivny nu odcl Iinlf-Iiour by cnlculntiiig the lognritlinis of l i d f :I tloacii niiinbcrs to iiw or sis 11hccs of dccimnls. 'L'Iie t h e wns wasted, of C O I I ~S C , but so it would I i n m bccn liritl ivc read the Intest, crickct or rnciiig news. Plotting diitn on n curve is tlic coniinoiicst mct,Iiod for tlic clieniist to record liis espcri1ncnts, rind t,lic deduction of l i i w froni tlicsc CIII'V~S is very easy if one lins lind enougli prrictice t o rivoitl t h c obvious pitfnlls. Tlic plotting of cliitn is iilso of the greatest \ d u e in inclus~rinl chemistry, rind ill ;iliiiost every briincli of industry ; we lcnow iiotliiiig to conipiirc with it for rccordiiig diiily or weelily innkcs, tlcliwrics, SiiICs, CX~CIISCS, n l i d SO 011. A cliiirt of tliis clinmctcr Cilll SllO\V i l t n glnllce 110\v 1 1 1 1 1 1 1 y tons \vcrc nlildc hst wcck or siiice the first of Februnry, Iiow iiiiiiiy piiges of n journal ivcre printed lnst ~vcck or siiicc tlie first of Jiinunry, d i n t they cost for printiiig or in total, liow niiicli profit the iuniiufncturcr luis iniidc, nssuiiiiiig ccrtiiin rougli figures for o~~erlie:itl cliiirges n i i d so on. Tliosc clieniists who desire posts of rcsponsibility i i i industry iniglitc (lo niucli worse tlinii spend iiii hour n ~vcck in rccorcling tlic fncts of iniportnncc t.0 t.licin niiil ii few hours e \ w y suniiiicr holiday owr 'J'ciylor's tdicorcin nnd the simple iiiiitlicmnticiil dcvices of tlint. Biiigulnr chcniist., pliilosopher, nud clstronomcr, Iai tic Newton.