โ Scribed by Strvens, J. L.
No coin nor oath required. For personal study only.
STREVENS-THE VISCOSITY OF OILS. 100 i s sncli ns to rc.inlt in IL p h t wliicli yiolds tt clifitinctlj lcsv nnioinit, of rntibcr. Witliin thc norniril Iiubitnt of tho gnnyiilo plntit, t Iicrcfnrc, tliu iriiiotint of r n l ~l ~i * vorics in nn nmoimt rrt lcnst i t s grcnt nu thnt nliovu inclicntctl, nnnicly, G2 Iwr cent. Tho nniotmt nf rosin hecrotcd nppcnrs lint t o h! nlkectc~rl 'Iiy tho ninnnnl. of soil-wntcr, nnd cvitlcnco i.r yot lnrking thnt. rtibhr trnd rcsin sccrction nro cniisnlly relirtctl in tliu pIn.11. SIICI~ t~ificrenccs, w~iic~i nr'c nt t r i ~n i t s ~~c * tn-p~iysio~ogirir~ cnitw.-, nrc of g e n t thenrcticd nncl prncticnl imprtnnco. London Section. I1T J. 1. . STREYESS. ('l'urunttki Oil Ficlds. Xcw Y~IILIIII.) of tho micorrcctcd and corrcotcd " copstnnt " cnrvcs) mrc too liigli nnd thoso o b v c too low, As it check on 1110 msiilt s ainiilnr viscoinctcr wns rocnlibrnteil ~l i o ~i n g n cnrrcs~mntling cnrvu a i d 110th instrirnionts wcro iifictl in tliu invcstigetiona, Mnny now oils litrvo hcii iiivwtigmtod whicli, with tho oxcoption of HOIIIO of vegotnblc i m l onininl origin, nro all Iiibricnnts woll knnwi to tlio oil tmtlo. cspccinllg in tho liigh tcniporuturo region. which for soma o i b npprnxinitrtcs 11, tlicir ncl~irrl working tentprotiirm. Until inom is knoxvn of tho netiinl con~titutiort of tho vnriotw lubricrrting oils of cnnitnercc, to yliut extent, tliu viscosity i$ nlkcctccl cnniiot 1ntntccl, Ijiit fmin annlogoiw work on Imotlics of klio\vii corLytitritioii it inny bo gonerally itdurrctl tlint (1) Incrcwc! of iiiol. r t . fnvoiim increano of Zt., c.g., ritlw, oil (tricrucin)>livo (triolcin). (2) Hytlmxgl fnrniutioii ftrvuiirs iticrci~wcl Zt., cg.. cnqtor oil and tho I,lown oil*. (3) l'olynicrisntinii (scu I), c.o., " Elcrktrinn " oiln. (4) Soltition c i f solid IIOII~L?~ in oils (c.~., ' I soaping ") tends to it high risco~ity-tcrtiI-r~rtiiru coeflicient.
๐ SIMILAR VOLUMES
In reply to nrr. Stenhoiisc. hrr. Nxw enid thtit Fnioklnnd found on niorc thau on0 ocatnion 10 pcr dent. of nitrogen, slid Iic lind liimsclf found oxygcn in tlic conl-pq to nn cxtcnt which would correspond to the oxcces lcft nftcr that rcquirccl for rcrlucing tho sulpliurcttctl IiyilrogcJi lind 1)wn