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Start Over Formats Text ✖Remove constraint Formats: Text Subjects Telescopes ✖Remove constraint Subjects: Telescopes Titles On the performance of a new form of level invented by Mr. John Clark of the U.S. Coast Survey ✖Remove constraint Titles: On the performance of a new form of level invented by Mr. John Clark of the U.S. Coast Survey Dates by Range 1850-1899 ✖Remove constraint Dates by Range: 1850-1899

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  • On the performance of a new form of level invented by Mr. John Clark of the U.S. Coast Survey1