Notebook belonging to Barnes Wallis and used whilst employed at J S White & Co. Arranged in alphabetical sections, Wallis' notes and calculations include: addresses; pressure and velocity of air; areas of sections and volumes of fillets; boat accounts; beams; working clearances; cams; compression; a photograph of the engine drawing office at J S White & Co.; diesel oil engines; expansion curves; fuel oils; gauges; hammocks; household expenses Jan-Jun 1913; Nurnberg oil engines; silences; abbreviations and equations used in Alexander's Columns & Struts; crankshafts and variable load