John Rylands Library of Cumbrian sandstone, the interior a delicately shaded 'Shawk' stone (from Dalston, varying in colour between sand and a range of pinks) and the exterior, dark red Barbary stone from Penrith. built around an internal steel framed structure and brick arched flooring. The red 'Barbary plain' sandstone, which Champneys believed 'had every chance of proving durable' for the exterior, was an unusual choice in late Victorian Manchester. It proved relatively successful, as an inspection by Champneys in 1900 revealed little softening by the 'effects of an atmosphere somewhat charged with chemicals' although, by 1909 some repairs were needed. The library
University of Manchester Library of the John Rylands Library, enabled the building of a tent-like octagonal hall next to the library, the Muriel Stott Conference Centre (on the building of the extension this was enclosed by the rest of the library). The design of the extension was modified when actually implemented in 1979 so that a link section united it with the three-wing existing library building. This new extension opened in the autumn term of 1981 and at the same time the medical and science (Christie) libraries were vacated so that a more coherent organisation of stock became possible. By the time this building