Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 36 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 37
Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 35



Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 36 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 37 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 38