George Theodore Wilkinson, An Authentic History of the Cato-Street Conspiracy (1820)
“ Rebellion at its first commencement is rarely found in military discipline or array, although a little success may soon lead it to assume those appearances. Any act manifesting a criminal intention, and tending towards the accomplishment of the criminal object, is, in the language of the law, an overt act. Overt acts may be committed openly and manifestly; but there are other overt acts, such as meetings and consultations, and contrivances, agreements and promises of mutual support and assistance, and incitements to others to engage in the same scheme, are also overt acts. ”
