Letter from George Gabriel Stokes, Lensfield Cottage, Cambridge, to Charles Vernon Boys He has reconsidered the utility of the 13 June lunar eclipse for Boys's researches into the radiant heat of the Moon and now considers a fuller eclipse would be better, providing his reasoning. He assumes that Boys will work with a reflecting telescope as the glass lens of a refractor would stop almost all heat. Lord Rosse discovered that only 8 or 10 percent of total heat from the Moon would get through even a thin piece of plate glass. Endorsed by C V Boys: 'Ansd. both 26 Mar.' 23 March 1900