This Act was one of several made by Pitt’ government in the crisis year of 1797: it forbade taking or administering unlawful oaths, or belonging to a confederacy forbidden by law. The aim, and the effect, was to inhibit the formation of rebellious groups.
Editors. "Act against Administering Unlawful Oaths". The Literary Encyclopedia. First published 02 December 2007
[http://www.litencyc.com/php/stopics.php?rec=true&UID=4292, accessed 29 May 2016.]