The metadata below describe the original scanning. Follow the "All Files: HTTP" link in the "View the book" box to the left to find XML files that contain more metadata about the original images and the derived formats (OCR results, PDF etc.). See also the
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Each plate preceded by leaf with descriptive letterpress
Bibliography: pt. 1, p.19; pt. 2, p.57-58
pt. 1. With especial reference to the "accessory chromosome."--pt. 2. A comparative study of the heterochromosomes in certain species of Coleoptera, Hemiptera and Lepidoptera, with especial reference to sex determination