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  • An old man wearing spectacles and his four pupils experiment using optical instruments and materials. Line engraving by F. Pedro after F. Maggiotto.
  • An old man wearing spectacles and his four pupils experiment using optical instruments and materials. Line engraving by F. Pedro after F. Maggiotto.
  • An old man wearing spectacles and his four pupils experiment using optical instruments and materials. Line engraving by F. Pedro after F. Maggiotto.
  • An old man wearing spectacles and his four pupils experiment using optical instruments and materials. Line engraving by F. Pedro after F. Maggiotto.