For intelligent amateurs, this charts a reading course in science for the purpose of widening scientific interest, promoting scientific hobbies, etc. From armchair to active participation, from the dilab to the concentrated. What kinds of books to real, how to read them, how to study and apply them -- intersperead with chapters on the individual sciences, are general chapters on the approaches to personal appreciation. Arranged under three main headings, facts of the universe, things and life he reviews the universal sciences (astronomy, mineralogy, geography, meteorology, logic, mathematics, physics, chemistry, ornithology, oceanology, ecology, etc.) He includes some of the new sciences, synthetics, plastics, and others.