XXIV ILLUSTRATIONS 



FIG. PAGE 



30. NERVOUS SYSTEM or THE COCKCHAFER, FROM STRAUS-DURCK- 



HEIM'S MONOGRAPH (1828), . . . .- . . 101 



31. EHRENBERG, 1795-1876, 108 



32. GESNER, 1516-1565, . 114 



33. JOHN RAY, 1628-1705, 116 



34. LINN/EUS (1707-1778) AT SIXTY, 124 



35. KARL TH. VON SIEBOLD, . 135 



36. RUDOLPH LEUCKART, ... 136 



37. SEVERINUS, 1580-1656, 142 



38. CAMPER, 1772-1789, 144 



39. JOHN HUNTER, 1728-1793, 145 



40. VICQ D'AZYR, 1748-1794, i47 



41. CUVIER (1769-1829) AS A YOUNG MAN, 152 



42. CUVIER AT THE ZENITH OF His POWER, 153 



43. H. MILNE-EDWARDS, 1800-1885, . . ... . -157 



44. LACAZE-DUTHIERS, 1821-1901, ....... 159 



45. LORENZO OKEN, 1779-1851, 160 



46. RICHARD OWEN, 1804-1892, 161 



47. J. FR. MECKEL, 1781-1833, 162 



48. KARL GEGENBAUR, 1826-1903, 164 



49. BICHAT, 1771-1801, 169 



50. VON KOELLIKER, 1817-1905, . 173 



51. RUDOLPH VIRCHOW, 1821-1903, 174 



52. FRANZ LEYDIG, 1821-1908 175 



53. S. RAMON Y CAJAL, 176 



54. ALBRECHT HALLER, 1708-1777, 182 



55. CHARLES BELL, 1774-1842, 184 



56. JOHANNES MULLER, 1801-1858, 187 



57. LUDWIG, 1816-1895, 188 



58. Du BOIS-REYMOND, 1818-1896, 189 



59. CLAUDE BERNARD, 1813-1878 . .191 



60. FRONTISPIECE OF HARVEY'S Generatione Animalium (1651), .201 



61. SELECTED SKETCHES FROM MALPIGHI'S WORKS, . . . 203 



62. MARCELLO MALPIGHI, 1628-1694, 204 



63. PLATE FROM WOLFF'S Theoria Generationis (1759), . . . 209 



64. CHARLES BONNET, 1720-1793, 212 



65. KARL ERNST VON BAER, 1792-1876, 216 



66. VON BAER AT ABOUT SEVENTY YEARS OF AGE, . . . .217 



67. SKETCHES FROM VON BAER'S EMBRYOLOGICAL TREATISE (1828), 221 



68. A. KOWALEVSKY, 1840-1901, 225 



69. FRANCIS M. BALFOUR, 1851-1882, 227 



70. OSKAR HERTWIG IN 1890, . 231 



71. WlLHELM HIS, 1831-1904, 235 



