CONTENTS 



CHAP. 



XIII. Load and After-load. Work done with Increasing 



Loads (Advanced). By A. P. B., 



XIV. Summation of Stimuli (Advanced). By A. P. B., - 



XV. Effect of Distilled Water arid of Various Salts on Muscle 



(Advanced). A. P. B., 67 



XVI. Fatigue of a Voluntary Movement and of a Muscle-Nerve 

 Preparation with its Circulation intact (Advanced). 

 By A. P. B., \J1& 



XVII. The Kate of Transmission of a Nervous Impulse 



(Advanced). By M. S. P., - 76 



XVIII. The Polarisation of Electrodes and Unpolarisable Elec- 

 trodes (Advanced). By M. S. P., 78 



XIX. Transmission of a Nervous Impulse in both Directions 



(Advanced). By M. S. P., - 79 



XX. The Relation between Muscle and Nerve. The Inde- 

 pendent Excitability of Muscle (Advanced). By 

 M. S. P., 80 



XXI. The Effect of a Constant Electrical Current upon the 

 Excitability and Conductivity of Nerve (Advanced) 

 By M. S. P., 81 



XXII. The Absence of Fatigue in a Stimulated Nerve 



(Advanced). By M. S. P., - 87 



XXIII. The Electromotive Properties of Muscle and Nerve 



(Advanced). By M. S. P., - - - 88 



XXIV. The Electromotive Properties of Muscle and Nerve 

 (continued). The Galvanometer and the Capillary 

 Electrometer (Advanced). By M. S. P., - - - 90 



XXV. The Anatomy of the Frog's Heart and its Contraction. 



By L. H., 92 



XXVI. Methods of Recording the Heart. By L. H., 97 



XXVII. The Stannius Heart. By L. H., - - 100 



XXVIII. The Cardiac Nerves and Ganglia. By L. H. 5 - - 103 



XXIX. The Sino-auricular Junction. The Action of Drugs. 



By L. H., 109 



XXX. The Effect of Nicotine, Chloroform, and Ether upon the 



Heart. By L. H., - 112 



XXXI. Dissection of the Heart. The Cardiac Impulse. ByL.H., 115 

 XXXII. The Pulse. Human Blood Pressure. ByL.H., - - 121 



XXXIII. Blood. The Haemoglobinometer and the Haemacyto- 



meter. By L. H., - 128 



