Letter from T J J [Thomas Jefferson Jackson] See, Naval Observatory, Mare Island, California, to J [Joseph] Larmor, New York As he will not have the opportuntity to see Larmor while he is in America, he writes to wish him an agreeable stay and hopes that there will be lecture tours in the future. He has sent a paper on earthquakes from the American Philosophical Society to Larmor's St. John's College address. A second memoir has been written on the contraction of the Earth, and if he is right, views on the physics of the Earth will have to be materially altered. He hopes that Larmor will be able to give some attention to these problems. 19 April 1907