Bacteria are an integral aspect of every habitat in which they occur and affect the lives of humans, other animals, and plants in many ways. Too often, we equate "bacterium" with "pathogen" and think of bacteria as things to avoid. In a guide for naturalists, students, teachers and tourists alike, Betsey Dexter Dyer lets the reader know that it is possible to observe bacteria with all the senses. Many groups of bacteria can be easily identified in the field (or in the refrigerator) without a microscope. Written for curious souls of all ages, the guide opens our eyes - and noses and ears - to this hidden (or neglected) world around us. Useful illustrations, including 120 colour photographs, accompany Dyer's lively text throughout.