LIST OF FIGURES IN PART I. 



FIG. PAGE 



1. Different forms of white corpuscles from Human Blood. ... 47 



2. A muscle-nerve preparation . 60 



3. Diagram of du Bois-Keymond key 62 



4. Diagram illustrating apparatus arranged for experiments with muscle 



and nerve 64 



5. Diagram of an Induction Coil 66 



6. The Magnetic Interrupter 67 



7. The Magnetic Interrupter with Helmholtz's arrangement for equalizing 



the make and break shocks 68 



' 8. A muscle-curve from the gastrocnemius of a frog 70 



9. The same, with the recording surface moving slowly .... 70 



10. The same, with the recording surface travelling very rapidly ... 71 



11. The Pendulum Myograph 72 



12. Diagram of an arrangement of a vibrating tuning-fork with a Desprez 



signal 74 



13. Curves illustrating the measurement of the velocity of a nervous impulse 77 



14. Tracing of a double muscular contraction 80 



15. Muscle-curve. Single induction -shocks repeated slowly ... 80 



16. The same, repeated more rapidly 81 



17. The same, repeated still more rapidly ....... 81 



18. Tetanus produced with the ordinary magnetic interrupter ... 82 

 1'9. Non-polarisable electrodes f . 109 



20. Diagram illustrating the electric currents of nerve and muscle . . 110 



21. Diagram illustrative of the progression of electric changes . . . 114 



22. Diagram of ascending and descending constant current .... 130 



23. Diagram of the electrotonic changes in irritability 132 



24. Diagram illustrating electrotonic currents 133 



25. Scheme of the nerves of a segment of spinal cord 172 



26. Apparatus for investigating blood pressure 207 



27. Tracing of arterial pressure in dog 208 



28. Tracing of arterial pressure in rabbit 209 



29. Ludwig's Kymograph 210 



30. Diagram of fall of blood pressure in arteries, capillaries and veins . 211 



31. Arterial model 217 



32. Tracing from arterial model with little peripheral resistance . . . 218 



33. The same with increased peripheral resistance 219 



