Letter from H H [Herbert Hall] Turner, University Observatory, Oxford, to [Joseph] Larmor Noting Larmor's paper on refraction, Turner references his own work where he discussed observations of thermometers in the T.C. [Transit Circle] Room at Greenwich, citing the important conclusion on the independent variable, excess of external temperature over average. He wonders if the Kimura Effect might be tested in this way. 19 February 1915