Anna Botsford Comstock very appropriately took the view that we should know first and best the things closest to us. Only then, when we have an intimate knowledge of our neighbors, should we, journey farther afield to learn about more distant things. Teachers and children will find the material in this book invaluable in that regard. Details of the most common, but in some ways the most interesting, things are brought out, first by careful, nontechnical descriptions of the things themselves and later by thoughtful questions and study units. Because the most common things are treated in greatest detail, materials for study are easy to find. Whether the reader lives in the inner city or in the rural outback, the handbook is a treasure trove of information. A teacher does not need to know much about nature to use this handbook. The information is there for the novice and the expert alike. All that is needed is an inquiring mind, senses to observe, and a willingness to think about nature on a personal level. To enter this book in search of information about any common organism, stone, or object in the sky is to open the door to a fresh and lively acquaintance with one’s environment.