ILLUSTRATIONS 



FIG. PAGE 



1. ARISTOTLE, 384-322 B.C., 14 



2. PLINY, 23-79 A.D., 16 



3. GALEN, 131-200, . - . 25 



4. VESALIUS, 1514-1565, .' ; . .29 



5. ANATOMICAL SKETCH FROM VESALIUS' Fabrica (1543), . .31 



6. THE SKELETON FROM VESALIUS' Fabrica, . . ' . . -33 



7. INITIAL LETTERS FROM THE Fabrica, . . . ','. 34 



8. FALLOPIUS, 1523-1563, . . . . . . , . . 37 



9. FABRICIUS, HARVEY'S TEACHER, 1537-1619, . . . .43 



10. WILLIAM HARVEY, 1578-1657, . . . . . 44 



11. SCHEME OF THE PORTAL CIRCULATION ACCORDING TO VESALIUS 



(i543)> - '49 



12. HOOKE'S MICROSCOPE (1665), 55 



13. MALPIGHI, 1628-1694, . . . . . . . . 59 



14. FROM MALPIGHI'S Anatomy of the Silkworm (1669), . . 65 



15. SWAMMERDAM, 1637-1680, . . 69 



1 6. FROM SWAMMERDAM'S Biblia Naturf, . . e . . 74 



1 7. ANATOMY OF AN INSECT DISSECTED AND DRAWN BY SWAMMERDAM, 76 



18. LEEUWENHOEK, 1632-1723, . . . . ... . = 79 



19. LEEUWENHOEKS MICROSCOPE, 82 



2oa. LEEUWENHOEK'S MECHANISM FOR EXAMINING THE CIRCULATION 



OF THE BLOOD, . . .' ..... .83 



2ob. THE CAPILLARY CIRCULATION, AFTER LEEUWENHOEK, . . 84 



21. PLANT CELLS FROM LEEUWENHOEK'S Arcana Natures, . . 86 



22. LYONET, 1707-1789, . . . , 90 



23. LARVA OF THE WILLOW MOTH, FROM LYONET'S MONOGRAPH 



(i75)> 9 2 



24. MUSCLES OF THE LARVA OF THE WILLOW MOTH, FROM LYONET'S 



MONOGRAPH, . . .93 



25. CENTRAL NERVOUS SYSTEM AND NERVES OF THE SAME ANIMAL, 93 



26. DISSECTION OF THE HEAD OF THE LARVA OF THE WILLOW MOTH, 94 



27. THE BRAIN AND HEAD NERVES OF THE SAME ANIMAL, . . . 95 



28. ROESEL VON ROSENHOF, 1705-1759, ... ..97 



29. REAUMUR, 1683-1757, ' . ." . * . . . .98 



xxiii 



