Fourth Volume - New Description of the Sun Dial - Chapters - Page 60 Fourth Volume - New Description of the Sun Dial - Chapters - Page 61
Fourth Volume - New Description of the Sun Dial - Chapters - Page 59



Fourth Volume - New Description of the Sun Dial - Chapters - Page 60 Fourth Volume - New Description of the Sun Dial - Chapters - Page 61 Fourth Volume - New Description of the Sun Dial - Chapters - Page 62