Evans, Henry Ridgely, b. 1861 · Chicago : The Open court Pub. Co.; [etc., etc.] · leaf 44
pened of itself on a certain dayof the 3^ear, and at a certain hour, by means of concealedmachinery, thus antedating our time-locks. Eventually it closeditself. At any other time, adds the author, if you had desiredto open it, you would have more easily broken it. AYhen Aeneas went to consult the… … APPARATUS FOR BLOWING A TRUMPET ON OPENINGA DOOR. According to Pliny, the doors of the labyrinth of Thebeswere constructed in such a manner that when they were openeds. sound resembling that of thunder greeted the astonished wor-shipers. Heron, in his Pncwnatics, describes an apparatus for blowinga…
Magic tricks
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