Just got this from Google Book Search Blog:
"In 2004, Google began a partnership with Oxford University Library to scan mostly 19th century public domain books from its Bodleian library. Five years on, we're delighted to announce the end of this phase of our scanning with Oxford, our first European partner. Together, we have digitized and made available on Google Book Search many hundreds of thousands of public domain books from the Bodleian and other Oxford libraries, representing the bulk of their available public domain content.
From English to German, to Spanish and French, most of the digitized works date from the 19th century and range from classic literature to more scientific volumes in fields including Geography, Philosophy or Anthropology. Among some of the works now available through Book Search, you can find the first English translation of Newton's Mathematical principles of natural philosophy from 1729, the first edition of Jane Austen's Emma, and John Cassell's Illustrated History of England. You can search and read the full text of these works on Google Book Search, and download and print a pdf if you wish to.