Letter from A [Arnulph] Mallock, 6 Cresswell Gardens, to [Joseph] Larmor Mallock is glad to know where James Thomson's paper is to be found. He was not certain that he had ever published on the subject, as Mallock was speaking of recollections of conversations with Sir William Thomson and Mr. [William] Froude. He thinks he is right in stating that the sand in the basin and the cross-flow in river curves are cases of the action of streams where velocity has been degraded by fluid friction. He describes the fluid flow around a bend, illustrating this with two sketches. 26 November 1910