Book excerpt: * Great for gardeners and amateur naturalists * Waterproof, rugged, and washable * Created by a high-school science teacher More than 1 million Mac's Field Guides have been sold -- in part because they're so easy to carry and use. Take this one out into your yard or garden to identify the good bugs from the bad bugs. Mac's Field Guides are the perfect wildlife identification tool for the amateur naturalist, covering a wide variety of subjects and regions in North America.