CONTENTS xix 



PAGE 



7. Bread - 612 



8. Excretion of urea (and total nitrogen) and proteins in food 612 



9. Measurement of the heat given off in respiration - - 613 



CHAPTERS IX. AND X. 



1. Difference of make and break induction shocks - - 702 



2. Stimulation by the voltaic current - - 704 



3. Ciliary motion - 705 



4. Direct excitability of muscle curara - 706 



5. Graphic record of ' twitch ' - 706 



6. Influence of temperature on the muscle-curve - 706 



7. Influence of load on the muscle-curve - 708 



8. Influence of fatigue on the muscle-curve - - 708 



9. Seat of exhaustion in fatigue of the muscle-nerve prepara- 



tion - 708 



10. Seat of exhaustion in fatigue for voluntary contraction - 709 



1 1 . Influence of veratrine on muscular contraction - - 709 



12. Measurement of the latent period of muscular contrac- 



tion - 710 



13. Summation of stimuli - 711 



14. Superposition of contractions - 711 



15. Composition of tetanus - 711 



1 6. Contraction of smooth muscles - - 712 



17. Velocity of the nerve-impulse - 713 



1 8. Chemistry of muscle - 713 



19. Reaction of muscle in rest, activity, and rigor - -715 



CHAPTER XI. 



1. Galvani's experiment - 738 



2. Contraction without metals - 738 



3. Secondary contraction - 738 



4. Demarcation and action currents with capillary electro- 



meter - - 739 



5. Action-current of the heart - 740 



6. Electrotonus - 740 



7. Paradoxical contraction - -741 



8. Alterations in excitability and conductivity produced in 



nerve by a voltaic current 741 



9. Formula of contraction - 742 

 10. Formula of contraction for (human) nerves in situ - - 743 

 n. Ritter's tetanus - - 743 



CHAPTER XII. 



1. Section and stimulation of nerve-roots 884 



2. Reflex action in the ' spinal ' frog - - 885 



3. Reflex time - - 886 



