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 What is the directory structure for the texts? FAQ for information about file content and naming conventions.
First edition appeared in 1 vol., 1836; the enlarged edition was originally complete in 2 vols, 1850, v. 3-4 being later additions in 1859 and 1868