raflicies circicer unius digiti; totaautem fuperficie globum circumder & circumcingac, unde circa medium fimilicurvatura, ur globi curvaturas cotwexx exacle congruat, cxcavetur , in medioaucem omnino orbiculus ifte fic rlercufus, uc globus uccunque promineac , fo-lum a curvacura cava fic… … 4 k
Optics, Geometrical · Optical instruments
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