Fourth Volume - New Description of the Sun Dial - Chapters - Page 12 Fourth Volume - New Description of the Sun Dial - Chapters - Page 13
Fourth Volume - New Description of the Sun Dial - Chapters - Page 11



Fourth Volume - New Description of the Sun Dial - Chapters - Page 12 Fourth Volume - New Description of the Sun Dial - Chapters - Page 13 Fourth Volume - New Description of the Sun Dial - Chapters - Page 14