The Publisher of these interesting Lectures, having made an arrangement for their publication with Mr. J.A. Mays, the Reporter, begs to append the following note from Professor Huxley:—

"Mr. J. Aldous Mays, who is taking shorthand notes of my 'Lectures to Working Men,' has asked me to allow him, on his own account, to print those Notes for the use of my audience. I willingly accede to this request, on the understanding that a notice is prefixed to the effect that I have no leisure to revise the Lectures, or to make alterations in them, beyond the correction of any important error in a matter of fact."