Page:Philosophical Transactions - Volume 003.djvu/215

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His Description is found in an Italian Book entitled ''L'OCCHIALE all' OCCHIO, overo DIOPTRICA PRATTICA del Carlo Ant. MANCINI in Bologna 1660, in'' 4°, which coming not into these parts, at least not to our knowledg, till now, could not be sooner taken notice of. It treats of Light; of the Refraction of Ray's; of the Eye and the Sight; and also of the considerable Helps that may be afforded to the Eye, to make it Rh