Twentieth Century Standard Puzzle Book / Three Parts in One Volume - Unknown

In Queen Victoria’s Jubilee year I went to the South Kensington Museum. As I entered, looking at my watch, I thought of the good Queen. After some hours of quiet enjoyment I came away, again looking at my watch, and was reminded that the Prince Consort was not alive to share the Jubilee joys. At what time, and for how long was I in the Museum?