Ballarat School of MinesBlack hard covered exercise book, contains index in front of book, written by P.J. McCarthy, covering experiments such as: the absolute density of water, focal length of concave mirror, law of repulsion between magnetic poles, fortin barmometer, Verniers, vaporization of steam, etc;density of water, focal length of concave mirror, law of repulsion, fortin barometer, verniers, ballarat school of mines, p.j. mccarthy