Fourth Volume - New Description of the Sun Dial - Chapters - Page 22 Fourth Volume - New Description of the Sun Dial - Chapters - Page 23
Fourth Volume - New Description of the Sun Dial - Chapters - Page 21



Fourth Volume - New Description of the Sun Dial - Chapters - Page 22 Fourth Volume - New Description of the Sun Dial - Chapters - Page 23 Fourth Volume - New Description of the Sun Dial - Chapters - Page 24