XXIV 



ILLUSTRATIONS 



FIG. PAGE 



30. Nervous System of the Cockchafer, from Straus-Durck 



heim's Monograph (1828), loi 



31. Ehrenberg, 1795-1876, 108 



^2. Gesner, 1516-1565, 

 ^^. John Ray, i 628-1 705, 



34. LiNN^us (i 707-1 778) AT Sixty, 



35. Karl Th. von Siebold, 



36. Rudolph Leuckart, . 



37. Severinus, 1580-1656, 



38. Camper, i 772-1 789, 



39. John Hunter, 17 28-1 793, . 



40. ViCQ d'Azyr, 1 748-1 794, 



41. Cuvier (i 769-1829) as a Young Man, 



42. Cuvier at the Zenith of His Power, 



43. H. Milne-Edwards, i 800-1 885, 



44. Lacaze-Duthiers, 1821-1901, 



45. Lorenzo Oken, 1779-1851, 



46. Richard Owen, 1804-1892, 



47. J. Fr. Meckel, i 781-1833, 



48. Karl Gegenbaur, i 826-1903, 



49. Bichat, 1771-1801, 



50. Von Koelliker, 181 7-1905, 



51. Rudolph Virchow, 1821-1903, 



52. Franz Leydig, 1821-1908 . 



53. S. Ramon y Cajal, 



54. Albrecht Haller, 1 708-1 777, 



55. Charles Bell, i 774-1842, 



56. Johannes Muller, 1801-1858, 



57. LuDWiG, 1816-1895, 



58. Du Bois-Reymond, 1818-1896, 



59. Claude Bernard, 1813-1878, 



60. Frontispiece of Harvey's Generatione Animalium (165 1) 



61. Selected Sketches from Malpighi's Works, 



62. Marcello Malpighi, 1628-1694, .... 



63. Plate from Wolff's Theoria Generationis (1759), 



64. Charles Bonnet, i 720-1 793, 



65. Karl Ernst von Baer, i 792-1876, .... 



66. Von Baer at about Seventy Years of Age, . 



67. Sketches from Von Baer's Embryological Treatise (1828) 



68. A. Kowalevsky, i 840-1 901, 



69. Francis M. Balfour, 1851-1882, 



70. OSKAR HeRTWIG in 189O, . 



71. Wilhelm His, 183 i- 1904, . 



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