You will receive by this days mail a copy of my lectures. I intend if I receive1 encouragement, to publish a complete class book on the applications of Chemistry. There are some errata in the work owing to the printer living some 8 or 10 miles from us, and all my communications with him were in writing: I have made the corrections, however, with a pencil. As to the book itself, it contains more facts on particular subjects than any other I am acquainted, and a great deal of my own research and observation.

However, as to the merit of the work, and its usefulness, you will be better competent to judge.

Prof. Crozet succeeded in his application: I believe he may be indebted to you for his success. You will find him useful in Your state.