Polymorphism, Wallace on, i. 168

“Population, Essay on,” Malthus’s, i. 103, 104, 111, 116, 136, 175, 317

“——­ Theory of,” Spencer’s, i. 124

Poulton, Prof., and Weismann’s “Essays upon Heredity,” ii. 44-6;
  paper on colours of larva, pupa, etc., 54;
  appointed Hope Professor of Zoology in Oxford University, 57;
  exposure of an American Neo-Lamarckian by, 60;
  Presidential Address to British Association, Wallace’s criticism of, 71;
  Presidential Address to Entomological Society, 79;
  on Wallace, 227;
  at funeral of Wallace, 252;
  and the Westminster Abbey memorial, 253

Poverty, Wallace’s views on, ii. 145 et seq.

“Power of Movement in Plants,” Darwin’s, i. 311, ii. 2

Prain, Sir D., and Wallace memorial in Westminster Abbey, ii. 253

“Prehistoric Times,” Lubbock’s, i. 164, 165-6

“Present Evolution of Man, The,” Archdall Reid’s, ii. 67, 73

Price, Prof.  B., formally offers D.C.L. degree to Wallace, ii. 217

Prichard’s “Physical History of Man,” i. 91, 116, ii. 73

Primula, Darwin’s paper on, i. 218

“Principles of Geology,” Lyell’s, i. 135, ii. 5

“——­ of Psychology,” Spencer’s, i. 123

“——­ of Sociology,” Spencer’s, i. 126

Proctor, R.A., i. 263; “Expanse of Heaven,” ii. 180

“Progress and Poverty,” Henry George’s, i. 317, 318, ii, 143

Protection, principle of, i. 140, 177, 184, 186, 189, 192, 199, 205,
    212 et seq., 214 et seq., 220, 221, 222, 223, 224,
    226 et seq., 235-6, 252, 256, 257-9, 270, 291, 299-300
    (see also Coloration, protective, and Mimicry)

“Protective Resemblance,” Wallace’s, i. 214

“——­ Value of Colour and Markings in Insects,” ii. 38

Protoplasm, origin of, Sir W. Thiselton-Dyer on, ii. 96-7

“Psychic Philosophy,” Desertis’s, ii. 203

Psychical research, Wallace and, ii. 181, 186 et seq., 196, 199

——­ ——­ Society, foundation of, ii. 196

Pteropus edulis, i. 54

Purdon, Dr., ii. 195

R

Ramsay, Andrew, Darwin on, i. 141

——­ Sir Wm., and Wallace national memorial, ii. 253

Rathbone, Reginald B., reminiscences of Wallace, ii. 124-7

“Rationalism,” Lecky’s, i. 164-6

“Regression to the mean,” ii. 69

Reichenbach, experiments of, with sensitives, ii. 196, 197

“Reign of Law,” Duke of Argyll’s, ii. 23

“Researches,” Prichard’s, i. 91, 116, ii. 73

“——­ on Evolution of Stellar Systems,” ii. 179-80

“Revolt of Democracy,” Wallace’s, ii. 104, 144, 145, 251

Rhynchaea, i. 183, 184

Rice, Dr. Hamilton, survey of Uaupes River, i. 29

Ridgeway, Dr., Bishop of Salisbury, ii. 252