Aug. 30 (Bloomberg) -- Google Inc., the most-used Internet search engine, today will start allowing users to download and print books that are out of copyright in its book search engine.

The titles can be viewed on line or downloaded in Adobe Systems Inc.'s Acrobat PDF format, Mountain View, California- based Google said yesterday in an e-mailed statement. Titles include Sir Isaac Newton's ``Principia'' and Dante's ``Inferno.''

Google earlier this month added the University of California to the list of libraries from which it is scanning books. For books protected by copyright, Google will display bibliographic information and small snippets of text. Those books can't be downloaded.

First announced in December 2004, Google's book-scanning program initially included works from Harvard University, Stanford University, University of Michigan, University of Oxford and the New York Public Library.

Shares of Google rose $1.80 to $380.75 at 4 p.m. New York time in Nasdaq Stock Market composite trading. They've fallen 8.2 percent this year.

To contact the reporter on this story: Jonathan Thaw in San Francisco at jthaw@bloomberg.net

Last Updated: August 30, 2006 16:04 EDT