Originally published in 1921, now reissued with revised text, completely ret. Inevitably, it ""dates"", though much material has been rewritten, to give it a -and-now feel. Its chief value today is the experimental side of it, for the author included a great many home experiments, tricks, etc. which help give prospective ntists a feel of the place of science in their lives. Chemistry, mechanics, liquids, sound, heat, light, electricity, meteorology --these are the chapter subjects. But the ssion of such things as application to agriculture, air conditioning, refrigeration, modern radio, television, aeronautics all make it seem old stuff.