This library is built in the open.
If you spot an error, have a suggestion, or just want to say hello — we’d love to hear from you.

Google logo.
This is a digital copy of a book, preserved for descendants on library shelves, before it was scanned by Google employees as part of a project aimed at making books from around the world accessible via the Internet.
Enough time has passed for the copyright on this book to expire, and it has entered the public domain. A book enters the public domain if it was never subject to copyright or if the copyright term has expired. The transition of a book into the public domain happens differently in various countries. Books that have entered the public domain are our key to the past, to the riches of history and culture, and to knowledge that is often difficult to find.
All marks, notes, and other entries present in the original edition are preserved in this file as a reminder of the long journey the book took from the publisher to the library, and finally to you.
Google is proud to partner with libraries to translate books that have entered the public domain into a digital format and make them widely accessible. Books that have entered the public domain belong to society, and we are merely the custodians of this heritage. Nevertheless, these books are quite expensive, so to continue providing this resource, we have taken steps to prevent the commercial use of the books, including setting technical restrictions on automated queries.
We also ask you to do the following:
Do not use files for commercial purposes.
We developed the Google Book Search program for all users, so please use these files only for personal, non-commercial purposes.
Do not send automated queries.
Do not send automated queries of any kind to the Google system. If you are involved in studying machine translation, optical character recognition, or other areas where access to a large amount of text may be helpful, please contact us. We recommend using materials that have entered the public domain for these purposes.
Do not remove Google attributes.
Each file contains a Google "watermark." It allows users to learn about this project and helps them find additional materials using the Google Book Search program. Do not remove it.
Keep it legal.
Regardless of what you use, do not forget to verify the legality of your actions, for which you bear full responsibility. Do not assume that if a book has entered the public domain in the USA, it can be used on that basis by readers from other countries. Conditions for a book entering the public domain vary in different countries, so there are no uniform rules allowing one to determine if it is possible to use a specific book in a specific case. Do not assume that if a book has appeared in Google Book Search, it can be used however and wherever you like. Punishment for copyright infringement can be very serious.
Google's mission is to organize the world's information and make it comprehensively accessible and useful. The Google Book Search program helps users find books from around the world, and authors and publishers find new readers. A full-text search of this book can be performed on the page http://books.google.com/