. Inde caoutchouc monde. r du Journal of Chemistry, addingto ce travail éditorial étude chimique pratique considérable. Il a continué dans cette position éditoriale jusqu'au grand foyer de Boston en 1872, après quoi il s'est embarqué dans les affaires sur le compte hisown en tant que chimiste analytique et consultant. Alors que le Journal of Chemistry l'a appelé comme un expert dans deux procès importants en litige en matière de brevets, l'un sur le nickelplaquage et l'autre sur la mise en conserve du maïs vert, avec le résultat que ces deux processus sont devenus la propriété publique. Pendant dix-huit ans, il a été professeur de chimie au Boston D.

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. India rubber world. r of the Journal of Chemistry, addingto this editorial work considerable practical chemical investiga-tion. He continued in this editorial position until the great firein Boston in 1872, after which he embarked in business on hisown account as an analytical and consulting chemist. While with the Journal of Chemistry he was called as anexpert in two important suits in patent litigation, one on nickelplating and the other on canning green corn, with the result thatboth these processes became public property. For eighteen years he w-as a professor of chemistry in theBoston Dental College, and during most of this time was State.ssayer of Ore and Metals, and Assayer and Inspector of Liquorsfor the Commonwealth of Massachusetts. While in the lattercapacity he was instrumental in placin.g upon the statute bookstwo laws, one defining as an intoxicating liquor any beveragecontaining over one per cent, of alcohol, and the other limitingthe number of licenses to one to each 1.000 inhabitants in. any town, and one to each 500 in the city of Boston. This law-cut the number of licensed liquor sellers in that city from 2.500to about 800. In 1880. in co-operation with the late N. C. Mitchell, Mr.Sliarples devoted much time and study to the reclaiming of wasterubber. Today there is not a factory in the country using theacid reclaiming process which does not use some of the processesdevised or put in operation at the Mitchell establishment in Philadelphia. He was the first to proposethe separation of iron from thescrap by a magnetic machine.He assisted in devising a processfor separating sand and brassfrom the rubber. .At one timehe made an investigation, extend-ing over many months, on the bestmethods of coagulating Castilloalatex, the results of which, as wellas of much other work, have neverbeen published, as they were madefor his many clients as a chemist. This work in the rubber fieldgave him a practical knowledge ofthe processes, so that when, in1890. sui

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