Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 28 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 29
Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 27



Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 28 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 29 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 30