Page:Romani Collegii Societatis Jesu Musaeum Celeberrimum 1678.pdf/83

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CAPUT VI
De Lusu Globulorum
SUbstituto tertio loco machinam tripartitam, cujus lusus, quem globulis efficit, ob occultum motus principium etiam peritissimos quosvis Mathematicos, in sui admirationem rapit. Occupat haec tripartita machina integrae fenestrae spatium, cujus ima pars in forma cubica tripalmare spatium complet, intus verò vacua pars rationem motus continuat, plana porro ejus frons eleganter in Optica porrectione sylvas, flumina, montes, valles, colles, hortos, et id genus ingeniosi penicilli argumenta refert, in summitatis medio vertice quà limbum spectat,et ostionum a quo continuatus trames extra verticale planum modice (scilicet ad globulorum diametrum)