ILLUSTRATIONS 



FIG. 

 I. 



2. 



3- 

 4- 



5- 

 6. 



7- 

 8. 



9- 



lO. 



II. 



12. 



13- 



14. 



15- 

 16. 



17- 



18. 



19. 



20a 

 206, 



21. 

 22. 



24. 



25. 

 26. 



27. 



28. 



29. 



PAGB 



14 

 16 



25 



29 



31 



33 

 34 

 37 

 "3 

 44 



Aristotle, 384-322 b.c, 



Pliny, 23-79 a.d., 



Galex, 131-200, ....... 



Vesalius, 15 14-1565, 



Anatomical Sketch from Vesalius' Fabrica (1543), 



The Skeleton from Vesalius' Fabrica, . 



Initial Letters from the Fabrica, ... 



Fallopius, 1523-1563, . . . . ; 



Fabricius, Harvey's Teacher, 1537-1619, 



William Harvey, 15 78-1 65 7, .... 



Scheme of the Portal Circulation according to Vesalius 



(i543)> 



Hooke's Microscope (1665), .... 



Malpighi, 1 628-1 694, 



From Malpighi's Anatomy of the Silkworm (1669), 

 Swammerdam, 1 63 7-1 680, ...... 



From Swammerdam's Biblia Nature., 



Anatomy of an Insect Dissected and Drawn by Swammerdam, 



Leeuwenhoek, 1632-1723, 



Leeuwenhoeks Microscope, , 82 



, Leeuwenhoek's Mechanism for Examining the Circulation 



of the Blood, ^t^ 



The Capillary Circulation, after Leeuwenhoek, . , 84 

 Plant Cells from Leeuwenhoek's Arcana Natura, . . 86 



Lyonet, 1 707-1 789, 90 



Larva of the Willow Moth, from Lyonet's Monograph 



(1750). 92 



Muscles of the Lar\'a of the Willow Moth, from Lyonet's 



Monograph, 93 



Central Nervous System and Nerves of the Same Animal, 93 

 Dissection of the Head of the Larva of the Willow Moth, 94 

 The Brain and Head Nerves OF THE Same Animal, . , .95 

 RoESEL von Rosenhof, 1 705-1 759, . . . . •07 



Reaumur, i 683-1 757, . 98 



xxiii 



49 

 55 

 59 

 65 

 69 



74 

 76 



79 



