CONTENTS XI 



PAGE 



CHAPTER IV 



The Introduction of the Microscope and the Progress of Inde- 

 pendent Observation, 54 



The pioneer microscopists : Hooke and Grew in England; Malpighi 

 in Italy and Swammerdam and Leeuwenhoek in Holland, 54. 

 Robert Hooke, 5 5 . His microscope and the micrographia ( 1 665 ) , 

 56. Grew one of the founders of vegetable histology, 56. Mal- 

 pighi, 1 628-1 694, 58. Personal qualities, 58. Education, 60. 

 University positions, 60, 61. Honors at home and abroad, 61. 

 Activity in research, 62. His principal writings: Monograph 

 on the silkworm, 63; anatomy of plants, 66; work in embry- 

 ology, 66. Jan Swammerdam, 1 637-1680, 67. His temperament, 

 67. Early interest in natural history, 68. Studies medicine, 68. 

 Important observations, 68. Devotes himself to minute anat- 

 omy, 70. Method of working, 71. Great intensity, 70. High 

 quality of his work, 72. The Bibli'a Natures, 73. Its publica- 

 , tion delayed until fifty-seven years after his death, 73. Illustra- 

 tions of his anatomical work, 74-76. Antony van Leeuwenhoek, 

 1632-1723,77. A composed and better-balanced man, 77. Self- 

 taught in science, the effect of this showing in the desultory char- 

 acter of his observations, 77, 87. Physiognomy, 78. New bio- 

 graphical facts, 78. His love of microscopic observation, 80. 

 His microscopes, 81. His scientific letters, 83. Observes the 

 capillary circulation in 1686, 84. His other discoveries, 86. 

 Comparison of the three men: the two university-trained men 

 left coherent pieces of work, that of Leeuwenhoek was discursive, 

 87. The combined force of their labors marks an epoch, 88. 

 The new intellectual movement now well under way, 88. 



CHAPTER V 



The Progress of Minute Anatomy, 89 



Progress in minute anatomy a feature of the eighteenth century. 

 Attractiveness of insect anatomy. Enthusiasm awakened by the 

 delicacy and perfection of minute structure, 89. Lyonet, ijoy— 

 1789, 90. Description of his remarkable monograph on the 

 anatomy of the willow caterpillar, 91. Selected illustrations, 

 92-94. Great detail — 4,041 muscles, 91. Extraordinary character 

 of his drawings, 90. A model of detailed dissection, but lacking 

 in comparison and insight, 92. The work of Reaumur, Roesel, 



