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This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book. ++++ The below data was compiled from various identification fields in the bibliographic record of this title. This data is provided as an additional tool in helping to ensure edition identification: ++++ Proceedings Of The Academy Of Natural Sciences Of Philadelphia, Volume 41; American Natural History Academy of Natural Sciences of Philadelphia Academy of Natural Sciences of Philadelphia, 1890 Science; Earth Sciences; Geology; Natural history; Science / Earth Sciences / Geology
The images represent actual product though color of the image and product may slightly differ.