On the Nature of the Fundamental Activity of the Nervous Centres; Together with an Analysis of the Conditioning of Rhythmic Activity In

I. Experiments in which the spinal cord is cut 24 II. Experiments in which the peripheral reflexes are tested during narcosis progression ..27 III. Movements of narcosis progression after de-afferentation of one hind limb . .32 IV. The general bearing of these experiments . . 33 V. The fundamental conditions of rhythmic progression 34 VI. The nature and position of the reflex . . . 39 VII. Evolution of function in the nervous system. . 43 Summary. 44