Reprint of the third and final edition. "Having observed in the Course of our English History many Attempts made (by the Ministers of some artful and designing Princes) to weaken and undermine the ancient, legal, and fundamental Rights, Liberties, and Privileges of the City and Citizens of London: i thought myself obliged to Endeavor to collect and ascertain such Laws, Customs, and Usages of the said City, Wherein the Original Constitution and Foundation of its Government seem to have been laid; and whereby its Happiness, Opulency, and Glory do (under God and his present Majesty) evidently subsist." (Preface). Though little is known about him personally, Bohun was an attorney and prolific author who published well-received treatises on legal education, pleading, ecclesiastical law and other subjects.

This 1768 work provides a thorough guide to the sources available for the study of British and Irish antiquities.