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Insects are from many kinds and differ greatly in their life histories and habits. From the viewpoint of man, some insects are injurious, some are unimportant, and some are beneficial. Because of these differences it is important to recognize insects, in order that our war against injurious species may be carried on effectively. Well-preserved and properly labeled specimens are essential to the identification of insects. This publication gives information on collecting, preserving, handling, mounting, and labeling insect specimens, on subsequent care of collections, and on recognition of the general insect groups, or orders. It has been prepared in response to numerous requests from farmers, students, servicemen, and other individuals and groups interested in obtaining first-hand knowledge of insects by collecting them.