This illustration shows a mixture of gases passing over a headed pumice to forming steam.

Heated Pumice

This illustration shows a mixture of gases passing over a headed pumice to forming steam.

The polishing room is where the Rosemen veneers-the tops and sides of the piano. Two men on each side of a piano-top rub rapidly with a pumice stone and finally the piano comes out perfectly smooth.

Piano Making-the Polishing Room

The polishing room is where the Rosemen veneers-the tops and sides of the piano. Two men on each side…