Long-awaited and much needed ""first"" in this field, this manual for identifying and collecting stones. All in all a satisfying production, and the need for more tables and charts for quick reference is partially made up by an extensive and detailed index. Unusual coverage and handling of a complicated and difficult subject. Beginning with an experimental test of identification of quartz, feldspar, mica and calcite, he then goes on to discuss many types of minerals, rocks and ore, indicating in each case the characteristics, tests, origin and geographical location. Pudding stone, breccia, shale, chalk, coal, marble, limestone and sandstone changes, turquoise, salt, gold are among the types included. Suggestions are made for collecting tools, exhibition cases, and exploratory field strips. Handsome pictures by Paul Wenck are functional as well as decorative. A must for libraries, schools, camps.