Trinity College, Dublin - HL has obtained from the Provost the permission WW desired, and has transmitted to Major Temple the order conveying it: 'The gardens are in beautiful condition, and (botanically) well arranged'. His magnetical work has been confined to the task of improving the methods of observing. The next task will be to obtain empirical laws from the data. In the higher task of connecting these laws with physical principles - Gauss is likely to have the principal share. HL hopes that the recent agitation will not keep WW from the Cork BAAS meeting. Lord Rosse's 6 foot aperture speculum will then be completed.
Royal Observatory Greenwich - GA sends WW a melody he wrote in 1826. GA has 'lately been into Ireland to try Lord Rosse's [William Parsons, 3rd Earl of Rosse] telescope; and on my return I came (but did not try) Lassell's [William Lassell]. Lord Rosse's telescope is not finished: "much has been done, but much remains to do". I can conceive that it will be necessary to alter entirely the mounting of the mirror. If you are in London on Friday November 10, you may at the R. Astronomical Society hear an explanation of some of the principal differences between L. Rosse and Lassell, and of some of the principal absolute methods of L. Rosse'. Could WW attend a meeting of the Board of Visitors on December 1 or 2: 'We must decide something about the objects and scale of our Magnetic Establishment, and I wish that you as physician would think of it'.
Royal Observatory Greenwich - Further to his last letter and the approval of WW's memorial on tides, GA subsequently sent a paper copy to Lord Rosse at the Royal Society for his approval; 'but I have heard nothing more about it (A non-resident President is a great evil). However, it will come I should think before long'.