NEW YORK, THURSDAY, OCT. 2

SECURE THE FIRST NUMBERS.—We have a few copies of our first number remaining, and those who intend to become subscribers will do well to secure them while they may. There will soon be a pressing demand for them, when too late. We are authorized to offer fifty cents for the first number of New York Mechanic

ELECTRICITY, AND MORSE'S TELEGRAPH.—We have now in course of preperation several engravings for the illustration of Galranism, Magnetism, Electro-magnetism, and Magneto-electricity; also a full representation of the machinery of the Electro-magnetic Telegraph.

TO CORRESPONDENTS—We have recieved several communications and drawings of bridges and other improvements, which will recieve due attention.

POSTMASTERS and others to whom this paper may be sent, are respectfully solicited to exhibit the same to others, that its patronage may be thus extended.