Abstract
J. Conder (1852〜1920) made an examination of the spesimens of bricks in September 1882 and asked J. Chambers (Engineer to the Rail-way Bureau) to test the specimens of Portoland cement in October of the same year for the plan of the Audience Chambers in the Imperial Palace. In the present paper, J. Conders' testing and his opinion and the other testing by the engineers of the Bureau of Imperial Palace Construction are described.