Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 14 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 15
Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 13



Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 14 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 15 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 16