No coin nor oath required. For personal study only.
yeiirs been t,ryiiig to co-ordiiintc it iiuinher of cotiipnriit i d y siiiiple tests of the ndhcsioii, Iinrdiiws, w n r resistiiiice, nnd corrosioii rcsishiice of electrodeposits which will nllow of tlic riipitl iissessiiiciit of tlic performniice of n given clectro-tl(~j)ositctl fitiisli uiidcr " out,door " rind *' iiitloor '' coiitlit,iotis of service. 'l'wo of the itiost. iiiiportiiiit. fiict.ora iirc the 1)orosit.y i i i i d thickiiess of electrodeposits ; iitid viiliiiil)lc tests of tliesc properbies hnve IJCCII, iiiitl nre beiiig, tlcvisetl for iiitliistriiil use. The tried iiiet,liotls iire fully tlcscri1)etl i n t-lie hook iititlcr revi cw.
11 ~wlunblc fcritiirc of the work is tlir~t~, owitig t,o the fact thiit the iiutoiiiobilc iiitlustry is coticeriictl with 1111 four of the iiiost iiiiportiitit, biisis iiietiils utilized :it present-rininely, steel, hiss, ziiic I)iisc tlic ciistiiigs, and diiiiiiiiiiiiii, encli of these iiiiiteriiils is corisitlcrctl and the iiiotlificntioii in t,licir rcspect,ive trciittiiciit, to ol)t.iiiii tlic iiiost cfiiciciit. results tii:iy he tletlucctl.
Tlic book is well protliicctl, clcitrly :itiiiotiitctl iiiitl tnliulntcd, iiiid profusely illust-riitctl. lliiiiy of tlicsc illustr:itiotis, wliicli couiprisc pliotogrnplis of tcst, pieces takcii iit rnrioiis stiigcs duriiig tlic progress of tlifrcri.iit corrosioii t,csts, arc esl)cci:dIy interest iiig to t,hc expert,.
๐ SIMILAR VOLUMES
real value, and it can be reconiniended with confidence to a11 chemists interested in tho nnnlysis of leather and the rneterinls and processes connected with its manufacture. ## D. MCCANDLISIK ljr.tTER h A L Y S I S FOIL SASITAILY AS I) TECllSICAL Punrosm. By 11. B. Stocks. Rcviscd and cn-Inrgd b
plnrits. Tlic first. clinptcr gives :I Iiistoriciil rc-ciciv of t,he derelopinent of knowlcdgc of lntcs nntl includes 1% discussion of the miiniifncturing posit,ion with respect to pntcnts. Otlicr clinptcrs den1 with t.hc source, composition, it nil priqicrties of' lntcs ; its preservation, conccntr