CONTENTS. ix 



SECTION IV. 



THE QUANTITY OF BLOOD AND ITS DISTRIBUTION IN THE BODY. 



PAGE 

 38. The determination of the quantity of blood in the body, and the 



main facts of its distribution . 53 



CHAPTER II. 



THE CONTRACTILE TISSUES. 



39. The movements of the body carried out by means of various kinds of 



contractile tissues 55 



SECTION I. 



THE PHENOMENA OF MUSCLE AND NERVE. 

 Muscular and Nervous Irritability. 



40. Irritability ; contractility ; stimuli 57 



41. Independent muscular irritability ; action of urari .... 58 



42. Simple and tetanic contractions 59 



43. The muscle-nerve preparation 59 



44. Various forms of stimuli. Induction Coil. Key. Magnetic Inter- 



ruptor. Electrodes. Method of graphic record .... 60 



The Phenomena of a Simple Muscular Contraction. 



45. The muscle-curve. Myographs. Time measurements. Signals . 69 



46. Analysis of a simple muscle-curve 75 



47. Variations of the muscle-curve. The shortening accompanied by 



thickening 78 



48. Simple muscular contractions rare in the living body .... 79 



49. Tetanic contractions. Analysis of the curve of tetanus ... 79 



50. Various degrees of tetanic contractions 83 



51. Diminution and disappearance of irritability after death ... 84 



SECTION II. 



ON THE CHANGES WHICH TAKE PLACE IN A MUSCLE DURING A 

 CONTRACTION. 



The Change in Form. 



52. Gross structure of muscle, arrangement of muscular fibres, blood 



vessels and nerves 86 



53. The wave of contraction; its length, velocity and other characters . 88 



