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Start Over You searched for: Subjects Light Remove constraint Subjects: Light Publication Year 1800 to 1899 Remove constraint Publication Year: <span class="from" data-blrl-begin="1800">1800</span> to <span class="to" data-blrl-end="1899">1899</span>

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8. An inquiry into the effects of light in respiration: submitted, as an inaugural essay, to the examination of the Rev. John Ewing, S.T.P. provost ; the trustees & medical faculty, of the University of Pennsylvania, on the thirty-first of May 1800 ; for the degree of Doctor of Medicine