XXIV 



ILLUSTRATIONS 



FIG. 



3°- 



3^- 

 33- 

 34- 



36. 



37- 



38. 



30- 

 40. 



41. 



42. 



43- 

 44- 



45- 

 46. 



47- 

 48. 



4Q- 

 50. 



51- 

 52- 

 53- 

 54- 



55- 

 56. 



57- 

 58- 

 59- 

 60. 

 6r. 

 62. 



63- 

 64. 

 65. 

 66. 

 67. 

 68. 

 69. 



Nervous System of the Cockchafer, from Straus-Du 



heim's Monograph (1828), 

 Ehrexberg, 1 795-1876, 

 Gesxer, 15 16-1565, 

 JoHX Ray, 1628-1705, 

 Lixx.Eus at Sixty (i 707-1 778), 

 Karl Th. von Siebold, 

 Rudolph Leuckart, . 

 Severixus, 1580-1656, 

 Camper, i 722-1 789, 

 John Hunter, i 728-1 793, 

 \'iCQ d'Azyr, 1 748-1 794, 

 CuviER as a Young Man, i 769-1829, 



CUVIER AT THE ZeNITH OF HiS PoWER, 



H. Milne-Edwards, 1800-1885, 



Lacaze-Duthiers, 1821-1901, 



Lorenzo Oken, i 779-1851, 



Richard Owen, 1804-1892, 



J. Fr. Meckel, 1781-1833, 



Karl Gegenbaur, 1826-1903, 



Bichat, 1771-1801, 



Von Koelliker, 181 7-1905, 



Rudolph Virchow, i 821-1903, 



Franz Leydig, 1821-1908 (April), 



S. Ramon y Cajal, 



Albrecht Haller, 1 708-1 777, 



Charles Bell, i 774-1842, 



Johannes Muller, i 801 -1858, 



Ludwig, 1816-1895, 



Du Bois-Reymond, 1818-1896, 



Claude Bernard, 1813-1878, 



Frontispiece of H.\rvey's Generationc Animalium (165 1) 



Selected Sketches from Malpighi's Works, 



Marcello Malpighi, 1 628-1 694, 



Plate from Wolff's Theoria Generationis (1759), 



Charles Bonnet, i 720-1 793, .... 



Karl Ernst von Baer, i 792-1876, . 



Von Baer at about Seventy Years of Agz, . 



Sketches from Von Baer's Embryological Treatise ( 



A. Kow.^levsky, 1840-1901, 



Francis M. Balfour, 1851-1882, 



OSKAR HeRTWIG in 1890, . 



WiLHELM His, 1831-1904, . 



RCK- 



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. 217 



1828), 221 

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