A GOOD IDEA.

The following letter, which was not sent to us for publication, but which is quite too good to keep, will explain an excellent mode of making the religious public acquainted with the existence of slavery in this country, and the religious institutions feel the force of anti-slavery sentiment:

FULTON, Oswego Co., N. Y. April 16th.

FREDERICK DOUGLASS, Esq.: Dear Sir:—Last Sunday, the Rev. F. E. Cannon, of Geneva, N. Y., Agent for the Old Board for Foreign Missions was here for his annual collection. Tickets and pencils were passed round. I filled up my ticket as follows:

"L. E. Loomis—cash 25 cents. In addition, I offer respectfully five copies of Frederick Douglass' Paper, the black man's advocate, to the agents of the American Board."

I now send you Mr. Cannon's reply card, and enclose you a $5 bill. Please send Mr. Cannon one copy of your paper one year, and credit me the balance.

Respectfully,

L. E. LOOMIS.

REPLY CARD.

April 10th, 1859.

Mr. L. E. Loomis:—I thankfully accept your offer, so far as I am concerned, and will be glad to receive a copy of Mr. Douglass' paper thro' the P. O. at Geneva.

Respectfully,

F. E. CANNON.