A correspondent sends the enclosed and asks our opinion.

■' For exterminating mealy bug, writes a correspondent in the Rural New-Yorker, I have never found anything so good as alcohol; or even common high-proof whisky will do. With a small soft brush one can soon clean the bugs from a hundred plants, no matter how badly infested. Dip the brush into the alcohol, and then let a drop or two fall upon a cluster of mealy bugs, and they will disappear. There are some very delicate kinds of plants which the alcohol will injure if used too freely; but there is not much danger in its application to the ordinary kinds cultivated in greenhouses."

We believe it is good advice. At any rate try a little first, and if effective, and no injury results, use it extensively.