Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 44 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 45
Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 43



Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 44 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 45 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 46