Fourth Volume - New Description of the Sun Dial - Chapters - Page 30 Fourth Volume - New Description of the Sun Dial - Chapters - Page 31
Fourth Volume - New Description of the Sun Dial - Chapters - Page 29



Fourth Volume - New Description of the Sun Dial - Chapters - Page 30 Fourth Volume - New Description of the Sun Dial - Chapters - Page 31 Fourth Volume - New Description of the Sun Dial - Chapters - Page 32