C.R. Cockerell and assistants, 1837-40
Comparative plans and sections of the library with that of the Chambre des Deputés. Pen and wash on thin paper. 40×25
MS Add.9272/4/59

Cockerell brought to Cambridge innovative techniques derived from his familiarity with recent developments in continental European architecture. Here he uses a drawing to explain his intentions to the university authorities, showing a section of the library built by Jules de Joly at the Palais Bourbon in 1828-33 alongside a revised section of the Cambridge library. By changing the principal light source from oculi to clerestory windows, the ceiling could be of vaulted brick, rendered inside with plaster. With this change to the design accepted by the university, the building would be acclaimed on completion as the first fire-proof library in Britain.