Copy letter from Joseph Larmor, to Mr T C Porter Encloses some extracts from the report of the referee on Porter's paper. There are experiments on the magnetism of electrically [?] iron by Beetz mentioned in Maxwell's chapter, and there are 'of course' the American and other papers on the effect of magnetism of iron on its chemical erosion. Doubts whether most of Porter's figures would print so as to show what is wanted. They could perhaps select two of them on Thursday if Porter thinks it desirable. 20 November 1903