r6 CONTENTS 



5. Demarcation and action currents with capillary electrometer - 652 



6. Action-curreni of the heart - 653 



7. Electrotonus - - 653 



8. Paradoxical contraction - - 654 



9. Alterations in excitability and conductivity produced in nerve 



by a voltaic current - - 654 



10. Formula of contraction - - - 655 



11. Kilter's tetanus - - 656 



12. Galvanotropism - - - 656 



CHAPTER XII. 



1. Section and stimulation of nerve-roots - - 767 



2. Reflex action - ... 768 



3. Action of strychnia - - - 768 



4. Excision of cerebral hemispheres (frog) - - - 768 



5. Excision of cerebral hemispheres (pigeon) - - 768 



6. Stimulation of the motor areas in the dog - - - 769 



7. Removal of the motor areas in the dog - - 770 



CHAPTER XIII. 



1. Formation of inverted image on retina - - - 857 



2. Phakoscope - - - 857 



3. Schemer's experiment - - 858 



4. Ktihne's artificial eye - ... 859 



5. Mapping the blind spot - - 861 



6. Ophthalmoscope - - 86 1 



7. Pupillo-dilator and constrictor fibres - - - 86 1 



8. Colour- mixing - 862 



9. Talbot's law - - 863 



10. Purkinje's figures - - 863 



11. Relation of pitch and vibration frequency - - 863 



12. Beats 863 



13. Acuity of touch 863 



