Gentlemen,—l have the honor to acknowledge j the receipt of your nattering invitation that 1 .should repeat the Lecture on the " ATOMIC PHE NOMENA OF NATURE,'" recently delivered by me for the benefit of the Female Humane Asylum.

Thanking you for the many friendly expressions which it conveys,! bos; to appoint FRIDAY, the 22d instant, at I P. M., at the New Richmond Thea tre, as the time and place for its delivery.