Excerpt from Annual Report of the Trustees of the Museum of Comparative Zoölogy, at Harvard College, in Cambridge: Together With the Report of the Curator to the Committee on the Museum, for 1875 Baron osten-sacken has continued to take charge of our collection of Diptera. I regret, however, to state, that, for the present, at least, his absence from Cambridge will deprive the entomological department of his services. To Messrs. Nathaniel Thayer, Geo. B. Emerson, and Theo dore Lyman, the Museum is indebted for means to carry on specific parts of the current work. 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.