Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 16 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 17
Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 15



Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 16 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 17 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 18