Galton, Francis to Sir George Howard Darwin, 1873-1910 Copies of letters from Francis Galton to Sir George Howard Darwin, 1873-1910, regarding Darwinism; family news; his travels to Switzerland; methods of interpolation; modification of the binomial law of error; definition of a free-hand curve; Darwin's paper on fallible measures; processes for artificially cooling rooms; committee places at the Royal Society; the Darwin Centenary. c1911-1914