On a former page, (109) this volume, we directed attention to a letter received from California, in winch it was stated that common wooden planes soon got out of order in that dry climate, and that iron planes would probably answer a better purpose. In answer to this, Mr. J. F. Palmer, of Auburn, N. Y., informs us that from his experience he believes that his plane is perfectly adapted to the dry climate of California, and not liable to get out of order. This plane is illustrated ana described on page 392, Vol. 12, SOIBN- , TIFIC AMERICAN.