[ 267 ] 



VI. CROONJAN LECTURE. On the Mammalian Nervous System, its Function.*, and 

 their Localisation di'l'T/idned by an Electrical Method. 



By FRANCIS^ GOTCH, Hon. M.A., Oxon., and VICTOR HORSLEY, F.R.S., &c. 

 (From the Physiological Laboratory of the University of Oxford.] 



Received and Bead February 2C, 1891. 



[PLATES 29-35.] 

 G 1 ONTEN 7 TS. 



Chap. Page. 



I. Introduction, including the authors' method and plan of research 267 



II. Historical 271 



III. Detailed description of methods. 1. Anaesthesia. 2. Operative procedure. 



3. Apparatus. 4. Method and precautions 280 



IV. The resting electrical difference in the Mammalian nerve and spinal cord . . 302 

 V. On the electrical effects evoked in the Spinal Cord and Mixed Nerve by 



excitation of the Cortex Cerebri 321 



VI. On the electrical effects evoked in the Spinal Cord and Mixed Nerve by 



excitation of the Corona Badiata 33i! 



VII. On Bilaterality of representation as evidenced by the electrical changes in the 



Spinal Cord and Mixed Nerves 342 



VIII. On the electrical effects evoked in the Spinal Cord by localised excitation of 



its different parts 303 



IX. On the electrical effects evoked in the Spinal Cord by excitation of the 



Lumbar Nerves 410 



X. On the electrical effects evoked in the Lumbar Nerves by localised exc tation 



of the Spinal Cord 4iO 



XI. On the Functional Activity of the Nerve Centres in the Spinal Cord and their 

 relations to nerve fibres in the same as determined by the galvanometric 



method 478 



XII. On the electrical effect evoked in the Spinal Cord and Mixed Nerves by 



Absinthe and Strychnia 511 



XIII. Summary and Conclusion ")!"> 



Description of Plates 520 



CHAPTER 1,-INTRODUCTION, INCLUDING THE AUTHORS' METHOD AND THE PLAN 



OF THE RESEARCH. 



IN the ' Proceedings of the Royal Society,' vol. 45, 1889, p. 18 (Meeting of November 1, 

 1888), we published a preliminary account of some of the experiments of which the 

 results are now given in full det ill. 



MDCCCXCJ. B. 2 M '2 IJ.li'.Ol 



