Hypothesis, additional, concerning physiological selection, 178. I. Independent variability, 12-29. Isolation, defined, 2; forms of, 3, 6; geographical, 3; discriminate and indiscriminate, 5; physiological, 9, 41, 58; its importance, 39; sketch of opinions on, 101; general conclusions, 144; SEEBOHM on, 173. J. JORDAN, M., on cross sterile varieties of plants, 86; his researches summarized, 87. K. KERNER, Prof. A., on prepotency, 176. L. LANKESTER, Prof. Ray, on divergent evolution, 15. LE CONTE, Prof., on fossil snails of steinheim, 95; on isolation, 129. LIVINGSTONE, Dr. David, Quoted, 123. M. MELDOLA, Prof., on difficulty from intercrossing, 121. Misunderstandings of Physiological selection, 59. Monotypic evolution, see Evolution. MORGAN, Prof. Lloyd, on sterility, 56; on isolation, 128. MOULTON, Mr. Fletcher, an examination of Mr. Wallace's calculations on physiological selection, 157. MÜLLER, Fritz, on cross-infertility, 174. N. NÄGELI, on isolation, 76; on synoicy, 78, 82. Natural selection, a form of discriminate isolation, 9, 10, 23; leads to monotypic evolution, 24-29; difficulties of, 41, 51. P. Panmixia, 12. Physiological selection, 9, 41; summarized, 58; misunderstandings of, 59; evidences of, 81-119; and Weismannism, 169; additional hypothesis, 178. Polytypic evolution, see Evolution. Prepotency, 89; importance of, 176. S. SCHMIDT, Prof. Oscar, on domesticated cattle, 171. SEEBOHM on isolation, 173. Segregation, 28. Selection, physiological, see Physiological selection. Self-fertilization and variability, 177. Snails of Sandwich Islands, 16, 130; fossil of Steinheim, 95. Specific differentiation and cross-infertility, 170. Stability and cross-infertility, 170. Synoicy, 78. T. Topographical distribution and physiological selection, 74; of varieties, 81. Transformation, serial and divergent, 21, 121. V. Variability and self-fertilization, 177. Variation in birds, 34. Varieties, topographical distribution of, 81. W. WAGNER, Maritz, 3; on geographical isolation, 76; quoted, 103; law of migration, 111. WALLACE, Mr. A. R., 3, 17; quoted, 34, 47, 51, 57,130-136; criticized by Gulick, 152. WEISMANN, Prof., on geographical isolation, 76, 114-118. Weismannism and physiological selection, 169. TITLE LIST OF OPEN COURT PUBLICATIONS ARRANGED ALPHABETICALLY BY AUTHORS ANESAKI, M. 345. BUDDHIST AND CHRISTIAN GOSPELS, Being Gospel Parallels from Pali Texts. Now first compared from the originals by Albert J. Edmunds. Edited with parallels and notes from the Chinese Buddhist Triptaka by _M. Anesaki._ $1.50 net. BAYNE, JULIA TAFT. 323. HADLEY BALLADS. _Julia Taft Bayne._ 75c net. BERKELEY, GEORGE. 307. A TREATISE CONCERNING THE PRINCIPLES OF HUMAN KNOWLEDGE. _George Berkeley._ Cloth, 60c net. (3s. net.) 308. THREE DIALOGUES BETWEEN HYLAS AND PHILONOUS. _George Berkeley._ Cloth, 60c net. (3s. net.) BINET, ALFRED.