British Library 19th Century Collection

I don't have an ipad, but this sounds really great, especially if you are interested in the 19th century.  The British Library has released 1000 items from its collection into an ipad app.  

"This application provides access to titles from the British Library’s 19th century book collection. It includes classic novels, works of philosophy, history and science. Browse, search and read these historic books on a platform that enhances the reading experience. These digital book images have been captured in color to preserve the look of the original book.  Marbled papers, embossed covers, engraved illustrations maps, and beautifully colored plates are intact and help create a unique reading environment.

Features:

• Search the collection
• Browse titles by subject
• Read commentary on selected titles
• View images of original maps
• See author inscriptions and margin notes
• Create favorite title lists
• Download books for offline reading

Visit: http://britishlibrary19c.tumblr.com to see sample curated content."