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Knight's Mechanical Encyclopedia (ed. Knight), H. (search)
pus in the Egyptian processions carried with him the measurer of time, an hour-glass. The Surya Siddhanta, a Sanscrit treatise on astronomy, treats of the stringed sand receptacles for measuring time; these were doubtless of the general character of our hour-glasses. Hour-glasses were unknown in China formerly, and of late are mentioned by them as of importation from the West. A tradition of the Middle Ages relates that the sand-glass (sablier) was invented by Liutprand , a monk of Chartres, who reinvented the art of making glass after the secret had been lost for ages. Shortly after receiving the famous clepsydra from Haroun al Rasehid, Charlemagne caused a monster sablier to be made, which required turning but once in 12 hours. It had the horary divisions marked upon the outside. The hour-glass or half-hour glass was a regular part of pulpit furniture in the sixteenth century, to denote to the preacher when it was time to close. It was used in Massachusetts two centur