ii. Keep your piano free from dust, and do not allow needles, pins, or

bread to be placed upon it, especially if the key-board is exposed, as such articles are apt to get inside and produce a jarring or whizzing sound.

iii. Do not load the top of a piano with books, music, &c., as the tone is thereby deadened, and the disagreeable noise alluded to in the last paragraph is often produced likewise.