Lectures in Physics A.

On account of the illness of Professor Peirce there will be only eight lectures in Physics A. Commencing next Thursday Professor Trowbridge will deliver four. The first will be on Sound with especial attention to the telephone and the phonograph. The second will be on Photography; the third on Spectrum Analysis, and the fourth on the Relation of Light, Heat, and Electricity. The last four lectures will be given by Professor Hall. The first will be Thursday April 17, on Prime Movers. The second will be on Steam Engines; the third on Dynamos, and the fourth on the Electric Railway and the Electric Light.