He groped along the wall for the electric switch, and found only the shank of it—the hard-rubber button having disappeared.
His hand clutched 12the hard-rubber receiver with white strength.
His hand reached upward and lifted the hard-rubber receiver from the hook.
He took one step forward as Loris swished across the sitting-room, lifted the hard-rubber receiver and voiced a soft, “Hello!”
We have, then, a glass or hard-rubber jar containing two lead plates and a solution consisting of water and sulphuric acid.
The touch key ended in a hard-rubber knob which could be brought in contact with the skin of the subject.