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 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 then the light flash. In this way one can look, without leaving his bed, into each room of the house.

Having given a few illustrations of this marvelous invention, the reader can readily see the variety of uses which it will serve.

Their latest discovery in light is a decided improvement over our electric light. I know of no sensible name to give it, but the name that comes nearest to describing it,