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.
The third essay includes "all the author's translations from the Avesta, except those portions of the Gathax which he did not include in the first edition ... Additional translations ... have been added in an appendix". cf. Preface
"History of the researches into the sacred writings and religion of the Parsis": p. -62