Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 38 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 39
Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 37



Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 38 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 39 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 40