" "There are sound-proof walls between their part of the house and this.

These four were filled with distrust of one another, but as they composed our male quartette, they would gather late on summer nights and conduct themselves in a manner to make me wish that old Azariah Prouse's peculiar belief as to house structure might have included a sound-proof fence about his premises.

There is to be nineteen sound-proof parlors with two pianos in each parlor.

The walls, the doors, the ceiling, and the floor were sound-proof, and the garden could not in any way be reached without passing through the house.