Most of this brown paper grab-bag is really about time keeping and time pieces, with the usual pauses for you to make a sundial, play with pendulums, or make a gift calendar for Dad. The last third of the book deals with nature's clocks, including people's, and consists of the usual mixture of believe-it-or-not phenomena, silly questions (how long is long ago?), pointless activities (ask the people you know how often they read their horoscopes), and research reports--at least one of the latter involving a confusing error in reporting. ""Inner clocks"" have been more informatively explored, and calendars (here only skimmed over) treated to far more exposition in several other juveniles. The history of timekeepers, with the related projects included here, are probably better suited to Burns' scrappy approach. In all, a book for casual browsing, by kids who will pick up on the ""RUTTLES MANIAC"" T-shirt in one picture but not object to the Mickey-Mouse question ""How old were you when you got your first watch?"" on the same page.