ILLUSTRATIONS 
Ric. PAGE 
30. NERVOUS SYSTEM OF THE CocKCHAFER, FROM STRAUS-DURCK- 
HEIM’s MonoGrapH (1828), 101 
1. EHRENBERG, 1795-1876, 108 
32. GESNER, 1516-1565, 114 
33. JOHN Ray, 1628-1705, 116 
34. LINN-EUS AT SIXTY (1707-1778), 124 
35. Kart TH. VON SIEBOLD, 135 
36. RuDoLpH LEUCKART, 136 
37. SEVERINUS, 1580-1656, 142 
38. CAMPER, 1722-1789, 144 
39. JOHN HUNTER, 1728-1793, 145 
4o. Vicq p’AzyR, 1748-1794, 147 
4r. CUVIER As A YounG Man, 1769-1829, 152 
42. CUVIER AT THE ZENITH OF His Power, 153 
43. H. Mrtne-Epwarps, 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, 1826-1g03, 164 
49. Bicwat, 1771-1801, es 169 
50. VON KOELLIKER, 1817-1905, 173 
51. RUDOLPH ViRCHOW, 1821-1903, 174 
52. Franz Leypic, 1821-1908 (April), 175 
53. S. Ramon y Cajat, 176 
54. ALBRECHT HALLER, 1708-1777, 182 
55. CHARLES BELL, 1774-1842, 184 
56. JOHANNES MULLER, 1801-1858, 187 
57. Lupwic, 1816-1895, 188. 
58. Du Bois-REYMOND, 1818-1896, 189 
59. CLAUDE BERNARD, 1813-1878, IQ 
60. FRONTISPIECE OF HARVEY’S Generatione Animulium (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. Kart Ernst von BAER, 1792-1876, 216 
66. VoN BAER AT ABOUT SEVENTY YEARS OF AG2, 217 
67. SKETCHES FROM VoN BaER’s EMBRYOLOGICAL TREATISE (1828), 221 
68. A. KoWALEvVSKy, 1840-1901, 225 
69. Francis M. BaLrour, 1851-1882, 28 
70. OSKAR HERTWIG IN 1890, 231 
. WILHELM His, 1831-1904, 
