LIST OF ILLUSTRATIONS. 



PAGE 



FIG. 01. Transverse section of the spinal cord, ...... 248 



62. Position of the principal nerves in the human body, . . . 257 



63. Brains of three classes of mammalia, ...... 321 



64. Brain of fish, amphibian, bird, and mammal, . . . . . 322 



65. Magnified view of a portion of skin from the thumb, . . . 354 



66. Vertical section of a portion of skin from the finger, . . . 355 



67. Enlarged view of the cutaneous papillae, ...... 357 



68. Sections of the nail and its matrix, 359 



69. Structure of the hair, .360 



70. Papillae of the tongue, ......... 374 



71. Bones and cartilages of the nose, . . . . . . . 381 



72. Transverse section across the nasal cavities, . . . . . 382 



73. Vertical section through the right nasal fossa, ..... 383 



74. View of the external, middle, and internal ear, .... 393 

 75 The three bones of the ear, 394 



76. Membrana tympani, inner side, ....... 395 



77. Sections of the internal ear, ........ 397 



78. Portion of the margin of the upper eyelid, ..... 417 



79. Front of the eye and its appendages, ...... 417 



80. Eyeball with optic nerve and muscles attached, .... 420 



81. The iris, 425 



82. Crystalline lens, 428 



83. Diagrammatic section of the eyeball, ...... 437 



84. The human teeth, 489 



85. Section of the crown of a tooth magnified, 492 



86. Permanent teeth forming beneath deciduous teeth, .... 495 



87. Back view of the pharynx and part of the oasophagus, . . . 502 



88. Section of stomach and duodenum, 508 



89. Abdominal portion of the alimentary canal, 511 



90. Portion of the small intestine, 512 



91. Smooth internal coat of the small intestine, ..... 512 



92. Ileo-csecal valve, 516 



93. Mucous membrane of the human stomach, . . . . . 524 



94. Perpendicular section through the mucous membrane of the human 



stomach, ........... 524 



95. Magnified view of a gastric tubulus, ....... 525 



96. Under surface of the liver and stomach, ...... 533 



97. The large vessels of the portal circulation, ..... 534 



98. Border of a Peyer's patch magnified, ...... 543 



99. Vertical section of a sac from a Peyer's patch, ..... 543 



100. Principal lymphatic vessels and glands in the human body, . . 600 



101. Superficial lymphatics upon the heart, ...... 601 



102. Two intestinal villi highly magnified, 603 



103. Bloodvessels of an intestinal villus, artificially injected, . . . 603 



104. Portion of the small intestine with its mesentery, . . . . 605 



105. Diagram of the heart and great bloodvessels, .' . . . . 633 



106. Three views of the base of the heart, after removal of the auricles, . 635 



107. Aorta detached from the heart, . . 637 



108. Diagram of the course of the blood through the heart, . . . 642 



109. Longitudinal section of the kidney, .....:. 769 



110. Air-tubes of the human lungs, front view, ..... 798 



111. Back view of the lungs and heart, 802 



112. Magnified view of groups of air-cells, ...... 803 



113. Inner surface of the air-cells, ........ 804 



1 14. Respiratory movements of the diaphragm, the walls of the chest, and 



abdomen, 806 



115. Lungs of a serpent, frog, and turtle, ...... 865 



116. Unfertilized germ-cell of a mammal, ...... 942 



117. Yolk of a hen's egg, supposed to be taken from the ovarium, . . 944 



118. Cicatriculi of the hen's egg after it has been laid, . . . .944 



119. Section of the hen's egg, 945 



120. Spermatozoa highly magnified, - 950 



121. Changes'in the ovum of a mammal after fertilization, . . . 951 



122. Forms of animal nucleated cells, 983 



