Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 12 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 13
Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 11



Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 12 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 13 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 14