Letter from J [Joseph] Larmor, 54 Antrim Road, Belfast, to 'Dear Master' [Charles Taylor] Larmor has just seen a note in 'Nature' of a paper by [Joseph] Wolstenholme. He does not know whether the paper contained more than reported, 'but the result admits of rather pretty (or perhaps obvious) extension', and he encloses this. He queries whether he should call a locus orthotropic, and thinks he may have sent a complex of the second order. The results he encloses are not so much simpler than those which could be obtained by ordinary methods, but they are grouped into one. He has given up on Taylor's problem of the order of orthoptic loci in space, not being able to get beyond a particular difficulty. 17 June 1882