ABSTRACT OF POPPE'S HISTORY OF CLOCK AND WATCH MAKING, AND OF THE METHOD OF DIVIDING THE DAY AT DIFFERENT PERIODS OF TIME: The oldest Method of Dividing the Day, and the Invention of Sun Dials Use of Sun Dials, and the Division of the day into Hours, among different ancient nations; gradual improvement of the art of constructing and using them, to the present period Oldest Method of Dividing the Nigh. Invention of water-clocks and sand-glasses, and the progressive improvement of them to the present time Ingenious water-clocks and other machines, the moving principle of which was different from that of our common Clo

Journal of the Franklin Institute, 1828-03, Vol.5 (3), p.151 [Periódico revisado por pares]

Philadelphia: American Periodicals Series II

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