each other while they are talking.

This wonderful attachment to their telephones, by which the human face
is also carried over the wire, was perfected over one thousand years
ago. I herewith give a few uses to which this invention is applied.

1. Office men have photograph wires connected with their homes, and they
can thus talk to and see any one of the family at their pleasure.

2. It can be so arranged that the wife in the home can, by touching a
little knob, see into her husband's office with which the wire is
connected, or the husband in the office can see into the room of the
house with which the connection is made. At either end of the wire, the
vision can be obstructed by drawing a curtain over the sensitive plate.

3. The foreman of an industrial work shop can see from his home the men
under his charge.

4. The superintendent of any large works can, at his will, peer into any
apartment he wishes from his head office. The advantages of this
arrangement can be easily seen.

5. A minister can see from his study the nature of his audience before
he leaves home.

6. Farmers can watch their cattle and their fruits without leaving the
house or barn, according to where the connections are made.

7. Persons can be in bed at night, and if they imagine they hear a
robber in any room they can first turn on the photograph current and