Fourth Volume - New Description of the Sun Dial - Chapters - Page 16 Fourth Volume - New Description of the Sun Dial - Chapters - Page 17
Fourth Volume - New Description of the Sun Dial - Chapters - Page 15



Fourth Volume - New Description of the Sun Dial - Chapters - Page 16 Fourth Volume - New Description of the Sun Dial - Chapters - Page 17 Fourth Volume - New Description of the Sun Dial - Chapters - Page 18