alone, that is alarmed at the progress and power of truth, he whose very trade is the known propagation of falsehood and delusion, the tyrants tool and scourge. All tyranny, oppression, and delusion, have been founded upon the ignorance and credulity of mankind. Knowledge, scientific knowledge, is the power that must be opposed to those evils, and be made to destroy them. Come forward, ye Men of Science, ye must no longer remain in the back ground as trembling cowards, ye must no longer crave protection from, and creep at the pleasure of, your direst foes; grasp at tyranny, at oppression, at delusion, at ignorance, and at credulity, and you shall find yourselves sufficiently powerful to destroy the whole, and emancipate both the mind and the body of man from the slavery of his joint oppressors. The latter of the before-mentioned works is a most important one, and has hitherto passed through several editions without molestation by the Attorney General, or the Society for propagating Vice. Whatever they may attempt, it will defy the malice of either. Many other very important publications are now in full sale, and from the appetite which I find still exists for them, I have been induced to make this bold appeal to Men of Science, calling upon them to stand forward and vindicate the truth, from the foul grasp and persecution of Superstition; and obtain for the island of Great Britain, the noble appellation of the focus of truth; whence mankind shall be illuminated, and the black and pestiferous clouds of persecution and superstition be banished from the face of the earth; as the only sure prelude to universal peace and harmony among the human race. DORCHESTER GAOL, MAY 1821. Eighteenth Month of the Author's Imprisonment, and the Fourth Month of the Imprisonment of his Wife. End of Project Gutenberg's An Address to Men of Science, by Richard Carlile