Biographical Memoirs Volume 62 (1993) / Chapter Skim
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Pages 3-16
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GEORGE FREDERIC BARKER July 14, 1835-May 24, 1910 BY EDGAR F . SMITH WHEN THE WRITER of the following paragraphs began the study of chemistry in 1972, his textbook was Elementary Chemistry, then in its tenth edition, written by Professor George F
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4 BIOGRAPHICAL MEMOIRS anc! able to render subjects, which were dry and unattractive though important, so simple and so fascinating, that the ordinary layman could comprehend them with ease.
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GEORGE FREDERIC BARKER 5 to municipal interests includes] studies of the local water supply, of the quality of illuminating gas, and of the means for protecting public buildings from lightning.
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6 BIOGRAPHICAL MEMOIRS created for him. During this period he served as expert for the state in several poison cases, the most noted being the Lydia Sherman case in New Haven.
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GEORGE FREDERIC BARKER 7 rived Acids" (ibid., xliv, 384) , he arrived at the following conclusions: ", That all the bonds of any simple radical may be saturated by the monad hydryl (OH)
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8 BIOGRAPHICAL MEMOIRS During his life et New Haven, he contributed a note "On the spectrum of an Aurora which appeared at New Haven, November 9, 1871." This point of particular interest in this observation was the fact that the line of wave-length, 502, was not laid clown in any authority accessible to the observer, as having been noted in the spectrum of the aurora. He acids: "indeed, no previous observer, so far as ~ know, has seen any auroral line between the Frauenhofer lines b anti F" (This Journal 3, ii, 465, 1871~.
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CEORCE FREDERIC BARKER 9 for tab genera principles of cons~uchon of tab ins~ument. and the advantages possessed by ~ in tbc readiness gab Limb it could be put into use, tbc brUliancy of the illuminated circle of light which it gave upon tbo screen, As great range of delicacy by which all experimental requirements might be answered, and' hnaDy, the sads~ctory character of Is performance as ~ demonstradon galvanometer (Proc.
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10 BIOGRAPHICAL MEMOIRS a wonder that out of such a reservoir the power by which we live should irresistibly rush into the organism and develop the transmitted energy which we recognize in the phenomena of life? Truly, as Spinoza has put it, 'Those who fondly think they act with free will, dream with their eyes open.' "Such are now the facts and theories to be found in the science of today considering the phenomena of life.
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GEORGE FREDERIC BARKER 11 monazite, which contains no uranium, and confirmed the results of these observers, to wit: that the thorium from this monazite is probably radioactive. From a series of experiments, he further concluded that thorium emanation rapidly decays, falling to one-half its value in one minute, while that of the radium emanation retains its active properties for several weeks.
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he also preparer! for the Smithsonian Institution annual reports upon physics from the year I8X]
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GEORGE FREDERIC BARKER 13 nal, and the abstracts of chemical and physical papers which he contributed regularly during this period are remarkable for their clearness and accuracy. In IS74-75 he was editor of the journal of the Franklin Institute.
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From page 14... ...
14 BIOGRAPHICAL MEMOIRS honors: Doctor of Science from the University of PennsyIvania in IS98; LL.D. from Allegheny College in IS9X; and LL.D.
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