The chemical industry club
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Article
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1920
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Wiley (John Wiley & Sons)
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ycplnccd by less cxpcnsivc mincrnl oil na n lubricnnt, cnstor oil is still omploycd in tlic tro ics for heavy mnc~iincry, and is esscntinl for t11c Krt+ntion of rotnry typcu OF intcrnnl coni1)cistlon ciigines. Tho ciiuscs of its siipcriority for tho lnttcr purposes :cppcnr still to bo somcnliat unce