All that remains to complete the stamps is the mounting of the rubber plate upon a suitable base or handle. This is best done either with zinc or with a solution of caoutchouc in benzine. The surface of the handle, as well as the back part of the stamps, having been covered with such a solution and well pressed together, after drying the entire stamp will be ready for use.—Amer. Lith. and Printer.

Vermin Exterminators.

Phosphorus or Luminous Paste.

This is an unequaled preparation for destroying rats, mice, cockroaches, etc. It attracts them by its luminous appearance and also by its odor, which is very attractive to all vermin. They eat it with great avidity.

Phosphorus 1/2 ounce.
Armenian bole1 ounce.
Arsenic1 ounce.
Oil of rhodium 1/2 drachm.
Tallow10 ounces.
Rye flour12 ounces.
Water12 ounces.

Cook the flour and water to a thin paste; add the phosphorus—previously melted in a little hot water—and mix; then add the rest and stir until thoroughly mixed.

Other Methods of Destroying Rats.—(1) Mix some fine plaster of Paris with an equal quantity of flour; put the mixture in the place infested by the vermin and a vessel full of water beside it. The rats will devour the mixture and then drink, whereupon the plaster, brought into contact with the water, will become solid and like a stone in their stomachs, which will cause their deaths. (2) When a house is infested with rats which refuse to nibble at toasted cheese or the usual baits, a few drops of oil of rhodium poured on or near the bait will attract them while the most tempting baits fail. (3) Cover the floor near their holes and place into their haunts a quantity of caustic potash. This they lick with their tongues, which makes their mouths sore, and they not only shun this locality, but appear to tell all the neighboring rats about it. (4) Instead of using chloride of lime or potash a quantity of tar can be smeared in and around their haunts and they will disappear. Tar and rats do not agree. If a live rat be caught, smeared with tar, and allowed to escape into the holes he will do the smearing process thoroughly.

Roach and Moth Exterminator.

Thymol2 parts.
Salicylic acid2 parts.
Alcohol200 parts.
Oil of lemon1 part.