CONTENTS. xiii 



PAGE 



675. The cortical area for smell 1087 



676. Sensations of taste 1087 



677. Sensations of hearing 1088 



SECTION IX. 



ON THE DEVELOPMENT OP CUTANEOUS AND SOME OTHER SENSATIONS. 



678. Sensations of touch, heat, cold and pain 1090 



679. Theoretical difficulties touching the cortical localisation of cutaneous 



sensations. The effects on cutaneous sensations of removing 



regions of the cortex 1091 



680. The afferent tracts from the spinal cord, their endings in the brain . 1094 

 681. The effect of sections of the spinal cord on the transmission of 



afferent impulses influencing the vasomotor centre . . . 1096 

 682. Other experiments on animals as to the effects of sections of the 



spinal cord on the transmission of sensory impulses . . . 1099 

 683. The teachings of clinical histories; different paths for different 



sensory impulses 1101 



684. General considerations on the development of sensations along the 



spinal cord. The cerebellar tract, the median posterior tract, the 



grey matter and internuncial tracts 1102 



The terms 'sensory' and 'motor' not an adequate description of the 



processes in the central nervous system 1105 



The transmission of sensations within the brain. The relations of 

 the cerebellum 1106 



SECTION X. 

 ON SOME OTHER ASPECTS OF THE FUNCTIONS OF THE BRAIN. 



687. Considerations touching the cerebellum 1109 



688. Considerations touching the corpora quadrigemina .... 1112 



689. The splanchnic functions of the brain 1114 



690. General considerations on the processes taking place in the cortex. 



The sources of the energy of the cortex 1115 



SECTION XL 

 ON THE TIME TAKEN UP BY CEREBRAL OPERATIONS. 



691. The reaction period or reaction time 1120 



692. Elementary analysis of psychical processes, the time taken up by 

 each. The time required for discrimination, for the development 

 of perception, and of the will ; the circumstances influencing them . 1122 



