SCIENTIFIC LECTURES BEFORE THE AMERICAN INSTITUTE.

The announcement of these lectures came to hand too late for our last issue, and the first has already been delivered. The course is as follows: Friday, Dec. 17, The Battle Fields of Science, by Andrew D. White, President of the Cornell University, Ithaca, N.Y. Friday, Dec. 24, How Animals Move, by Professor E. S. Morse, of the Peabody Academy of Science, Salem, Mass. Friday, Dec. 31, The Correlation of Vital and Physical Forces, by Professor G. F. Barker, of Yale College, New Haven. Friday, Jan. 7, The Air and Respiration, by Professor J. C. Draper, of the College of the City of New York. Friday, Jan. 14, The Connection of Natural Science and Mental Philosophy, by Professor J. Bascom, of Williams College, Williamstown, Mass. Friday, Jan. 21, The Constitution of the Sun, by Dr. B. A. Gould, of Cambridge, Mass. Friday, Jan. 28, The Colorado Plateau, its Canons and Ruined Cities, by Professor J. S. Newberry, of Columbia College, New York.

The course is a good one, and ought to be, and doubtless will be, well attended. Abstracts of the lectures will appear as delivered, in the SCIENTIFIC AMERICAN.