83. Purkinje, 1787-1869, 267 84. Carl Nägeli, 1817-1891, 268 85. Hugo von Mohl, 1805-1872, 269 86. Ferdinand Cohn, 1828-1898, 271 87. Heinrich Anton De Bary, 1831-1888, 272 88. Max Schultze, 1825-1874, 273 89. Francesco Redi, 1626-1697, 280 90. Lazzaro Spallanzani, 1729-1799, 283 91. Apparatus of Tyndall for Experimenting on Spontaneous Generation, 290 92. Louis Pasteur (1822-1895) and His Granddaughter, 295 93. Robert Koch, born 1843, 301 94. Sir Joseph Lister, born 1827, 302 95. Gregor Mendel, 1822-1884, 315 96. Francis Galton, born 1822, 317 97. Charles Lyell, 1797-1875, 331 98. Professor Owen and the Extinct Fossil Bird of New Zealand, 333 99. Louis Agassiz, 1807-1873, 334 100. E.D. Cope, 1840-1897, 336 101. O.C. Marsh, 1831-1899, 337 102. Karl von Zittel, 1839-1904, 339 103. Transmutations of Paludina (after Neumayer), 352 104. Planorbis Shells from Steinheim (after Hyatt), 353 105. Bones of the Foreleg of a Horse, 356 106. Bones of Fossil Ancestors of the Horse, 357 107. Representation of the Ancestor of the Horse Drawn by Charles R. Knight under the Direction of Professor Osborn. Permission of the American Museum of Natural History, 359 108. Fossil Remains of a Primitive Bird (Archæopteryx), 360 109. Gill-clefts of a Shark Compared with those of the Embryonic Chick and Rabbit, 361 110. Jaws of an Embryonic Whale, showing Rudimentary Teeth, 362 111. Profile Reconstructions of the Skulls of Living and of Fossil Men, 365 112. Lamarck, 1744-1829, 373 113. Charles Darwin, 1809-1882, 381 114. August Weismann, born 1834, 400 115. Hugo de Vries, 403 116. Buffon, 1707-1788, 412 117. Erasmus Darwin, 1731-1802, 413