File:Transactions (1871) (14594376427).jpg

Identifier: transmining13amer (find matches)
Title: Transactions
Year: 1871 (1870s)
Authors: American Institute of Mining, Metallurgical, and Petroleum Engineers
Subjects: Mineral industries
Publisher: New York (etc.)
Contributing Library: Robarts - University of Toronto
Digitizing Sponsor: University of Toronto

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.^T-.c r#/-i,I;.--i3?vo:.-i;v,5r-.iWii Conctuitiatiiig-Woik!^ of the Theal Mine, Pvitnam Co., N. N. THE VOLUMETRIC DETERMINATION OF MANGANESE. 39 THE INFL VENCE OF OBGANIC MA TTER AND IRON ON THEVOLUMETRIC DETERMINATION OF MANGANESE. BY J. B. MACKINTOSH, NEW YORK CITY. The present note is intended as an addition to my previous com-munication on the volumetric determination of manganese, read atthe Roanoke meeting,* it having been suggested that the circum-stances under which my experiments had been conducted, were essen-tially different from those met with in the analysis of irons. Themethod used in these experiments is the same in all its details astliat described in the paper referred to. I have made seven experiments in all: two of these were in duplicateon half a gramme of a sample of spiegel dissolved in hydrochloricacid; one was on the same amount of spiegel with the addition of25 c.c. of a standard solution of potassium permanganate; one wason the same amount of spiegel with th

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