A younger generation, taking Gothic architecture more seriously, provided the readership for John Britton's series "Architectural Antiquities of Great Britain", which began appearing in 1807. In 1817, Thomas Rickman wrote an "Attempt..." to name and define the sequence of Gothic styles in English ecclesiastical architecture, "a text-book for the architectural student". Its long antique title is descriptive: "Attempt to discriminate the styles of English architecture from the Conquest to the Reformation; preceded by a sketch of the Grecian and Roman orders, with notices of nearly five hundred English buildings". The categories he used were Norman, Early English, Decorated, and Perpendicular. It went through numerous editions, was still being republished by 1881, and has been reissued in the 21st century.