Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 10 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 11
Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 9



Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 10 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 11 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 12