Statistics for occurrence #1 of “Dr. C. M. Cresson” in article 17 of The Daily Dispatch: September 9, 1861., [Electronic resource]:

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--A lorgnette for subaqueous exploration has been prepared by Dr. C. M. Cresson , of Philadelphia. Its peculiarity consists in placing a Nicol's prism of Iceland spar between the object glass and the eye piece, which removes the greater part of the bright light reflected from t...

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