Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 8 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 9
Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 7



Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 8 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 9 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 10