Fourth Volume - New Description of the Sun Dial - Chapters - Page 18 Fourth Volume - New Description of the Sun Dial - Chapters - Page 19
Fourth Volume - New Description of the Sun Dial - Chapters - Page 17



Fourth Volume - New Description of the Sun Dial - Chapters - Page 18 Fourth Volume - New Description of the Sun Dial - Chapters - Page 19 Fourth Volume - New Description of the Sun Dial - Chapters - Page 20