iv GENERAL PHYSIOLOGY OF NERVOUS SYSTEM 273 



oxygen, but to an accumulation of products of metabolism, wbicb 

 have a paralysing action and are easily oxidisable, so that a 

 proportional amount of oxygen is consumed in neutralising them. 



Fn;. Itiij. Central preparation of toad. (Bullion!.) The posture of the lower liinlis. uliirli arc 

 exhausted by recent reflex activity, differs from that in a living preparation. The dm-sal surface 

 of the spinal cord is shown. 



He further found that the spinal cord under these conditions 

 consumes about 250-350 cmm. of oxygen per gramme per hour, 

 its respiratory quotient being always less than unity. 



Two years previous to Verworn, Ducceschi (1898) had made 

 VOL. in T 



