FROM C. J. MONRO, Esq.

                                                                              15th February 1857.

     Have you seen the Pomeroy packet? It has much more in it than any travels I ever read. Lots of phenomena,   human and otherwise, on the way out: especially the waves in a storm. . . .

     . . . They who deal in instruments of strings say that if you strike a certain note you hear certain others above. Is  that because of the further terms in a Fourier's integral, or because a sympathetic vibration is excited in certain other of the strings of the same instrument? I observe Weber says that it does not occur in wind instruments.