Reilly, Callcott Manuscript. On terminology in the theory of elasticity, emphasising the importance of the French contribution and the French term "glissement" (sliding) to replace "shear", about K Pearson's article on St Venant's unpublished works, on the need for a uniform terminology, and on receiving volume 1 of <i>A history of the theory of elasticity and of the strength of materials from Galilei to the present time</i> with thanks for the acknowledgement. 1885-1886