14 ILLUSTRATIONS 



FIG. PAGE 



45. Large bottle for holding stock salt solution 52 



46. Frog board and clip (Harvard) 54 



47. Dissection of a frog showing position of the brain, sciatic nerve and 



arteries and muscles of the hind limb (Color plate) .... 54 



48. Frog's brain 55 



49. Method of pithing a frog 56 



50. Harvard moist chamber 57 



51. Harvard muscle lever 58 



52. Harvard gas chamber 58 



53. Ether bottles showing method of administering air and ether . . 59 



54. Three forms of containers for ethyl chloride 60 



55. Method of smoking drums 61 



56. Automatic shellacing pan and drying rack for drum records ... 62 



57. Varnishing pan for varnishing records 63 



58. Print and tracing trimmer 63 



59. Method of arranging the inductorium 64 



60. Dissection of a frog to show the position of the heart, vagus nerve 



and the muscles of the hind limb (Color plate) '>."> 



61. Diagrammatic dissection to show the innervation of the frog's heart 66 

 (52. Heart lever 66 



63. Arrangement of apparatus for recording frog heart tracings ... 67 



64. Medicine dropper 68 



65. Anatomy of the frog's heart 69 



66. Diagrammatic representation of the lymph spaces of the frog . . 70 



67. Apparatus for recording turtle heart tracings 72 



68. Method of sawing out a square in the plastron of a turtle .... 73 



69. Diagrammatic representation of the turtle's heart (Color plate) . 74 



70. Schematic representation of the vagus and sympathetic nerves in 



a turtle ^5 



71. Method of etherizing a dog 77 



72. Laboratory table 79 1 



73. Metronome for operating the electric time signal SO 



74. Lieb-Becker time marker made from an Ingersoll watch ... 80 



75. Harvard time clock 81 



76. Jaquet chronograph 



77. Two forms of time clocks 82 



78. Method of fastening the animal's head to the dog board .... 83 



79. Heavy string with slip noose ready to put around the fore limb . . 83 



80. Method of attaching fore limbs to the dog board 84 



81. Method for quickly fastening the string to the board without tyiiiy 



any knots S4 



82. Method of fastening the hind limbs 85 



S3. Method of incising the skin to expose the trachea 86 



84. Same as Fig. 83. Separation of borders of sternohyoid muscles . 87 



So. Same as Fig. 83. Exposing the trachea 87 



86. Same as Fig. 83. Lifting up and passing forceps beneath trachea . 88 



87. Same as Fig. 83. Fifth step in the operation 88 



ss. Same as Fig. S3. Insertion of the tracheal cannula S9 



89. Same as Fig. 83. Lifting up right carotid sheath on an aneurism 



needle 89 



