——­ ——­ ——­ letter to Mr. M.J.  Murphy, on Mr. Lloyd George, ii. 164-5

——­ ——­ ——­ letter to Dr. Norris, on increasing weakness, ii. 136-7

——­ letter to Miss Norris, on health and diet, ii. 136

——­ ——­ ——­ letters to Prof.  E.B.  Poulton: 
  on “Protective Value of
  Colour and Markings in Insects,” ii. 39;
  on Weismann’s “Essays upon Heredity,” 44, 45;
  on Grant Allen’s theory of origin of wheat, 46;
  on Cope’s “Origin of the Fittest,” 47;
  on Weismann’s additional essays, 51-3;
  on non-heredity of acquired characters, 54-5;
  on maternal impression, 56-8;
  on Bateson’s “Material for the Study of Variation,” 60-1;
  on Poulton’s “Theories of Evolution,” 61-2;
  criticising Romanes, 63-5;
  on Poulton’s Presidential Address to British Association, 71-2;
  on denudation and deposition, 73;
  on mutation, 79;
  on Poulton’s Presidential Address to Entomological Society, 79;
  on Mendelism and mutation, 84;
  on Poulton’s Introduction to “Essays on Evolution,” 85-6;
  on invitation to lecture at Royal Institution, 87;
  on Lord Rothschild’s butterflies, and Royal Institution lecture, 88-9;
  on an article in the Times, 89;
  on Bergson, 98;
  on Sleeper’s alleged anticipation of Darwinism, 99-100;
  on declining the Oxford D.C.L. degree, 217-18;
  agreeing to accept the degree, 218

——­ ——­ ——­ letters to Dr. Archdall Reid: 
  on “Present Evolution of Man,” ii. 67-8;
  on instinctive knowledge, 68;
  on “Ancient Britain and Invasions of Caesar,” 86;
  on Mendelism and Evolution, 92-3

——­ ——­ ——­ letter to Mr. Clement Reid, on discovery of Miocene
    or Pliocene Man in India, ii. 62

——­ ——­ ——­ letter to Mr. H.N.  Ridley, on De Rougemont, ii. 76

——­ ——­ ——­ letter to Mr. Alfred Russell, on vegetarianism, ii. 158

——­ ——­ ——­ letters to Mr. G. Silk: 
  on Alexandrian donkey-drivers, i. 45;
  on forthcoming visit to Sarawak, 52;
  on marriage, 87

——­ ——­ ——­ letters to Mrs. Sims (his sister): 
  on his assistant, i. 56, 60;
  on missionaries, 62;
  on life in Macassar, 64;
  on Java and its flora, 85

——­ ——­ ——­ letters to Thomas Sims: 
  on Singapore, i. 61;
  on monocular and binocular vision, Darwin’s “Descent of Species,”
    and belief and disbelief, 73

——­ ——­ ——­ letters to Mr. E. Smedley: 
  on Child’s “Root Principles,” ii. 83-4, 100-1;
  on prayer, 163;
  on Mars, 175;
  on horoscope, 215

——­ ——­ ——­ letter to Dr. Edwin Smith, on Spiritualism, ii. 210

——­ ——­ ——­ letter to Mr. C.G.  Stuart-Menteith, on segregation of
    the unfit, ii. 160-1

——­ ——­ ——­ letter to Mr. A.C.  Swinton, on suggested lecture tour
    in Australia, ii. 155

——­ ——­ ——­ letters to Sir W. Thiselton-Dyer: 
  on botanical distribution and migration, ii. 34-5;
  on Darwin Commemoration volume, 90-1;
  on “World of Life,” 93-5;
  on election to Royal Society, 221-2;
  on Romanes’ charge against Wallace of plagiarism, 235-6