Excerpt from The North American Species of Diaptomus: Thesis By far the greater part of the collections examined are the property of the Illinois State Laboratory of Natural History. They represent localities distributed over the entire continent, from Massachusetts in the East to Oregon in the West, as far south as Florida and as far north as Canada, and including the following states: Massachusetts, Florida, Mississippi, Ohio, Indiana, Illinois, Iowa, Minnesota, Michigan, Wisconsin, Oregon, Washington, Montana, Wyoming, California, Idaho, and Nevada. In addition to the above I have examined specimens from Manitoba, Newfoundland, and Greenland. The localities represented by these collections vary widely in character, ranging from temporary pools on the Illinois prairies to Lakes Michigan and Superior; from the warm lakes of the Florida swamps to the cold mountain lakes of the Rockies; and from the small head-water streams of the Kaskaskia to the sluggish Illinois and the mighty Mississippi. The collections were made at all seasons of the year and at nearly all times of the day and night. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.