in Lacteal Absorption and Nutrition. 43 



trode was inserted into the substance of the muscle, blood still 

 positive. 



The external surface of the rectus and its tendon were formed 

 into a circuit ; no effect. 



The external and divided surfaces of the muscles of the shoulder 

 were formed into a circuit ; a very slight effect, which soon sub- 

 sided; external surface positive. 



Exp. 4. Rabbit. — Three hours after death ; death from natural 

 causes. 



The adductor muscles of the thigh were divided transversely, 

 and the external and divided surfaces formed into a circuit ; no 

 effect. The external and afterwards the internal surface of the 

 same mass were formed into circuits with the blood in the iliac 

 vein ; no effect. 



Exp. 5. Rabbit. — Prussic acid dropped on the eye. 



The skin was reflected from the back part of the leg ; a vein 

 wounded and one electrode in contact with the blood, the 

 other with the external surface of the muscles ; the latter posi- 

 tive 2°. 



The muscular mass at the back part of the thigh was divided 

 transversely, and the external and divided sm-faces formed into 

 circuit ; the former slightly positive. 



The lumbar mass of muscles was divided transversely, and a 

 circuit formed between the external and divided surfaces ; the 

 former positive 3°. The effect appeared some\Ahat greater when 

 the electrode was placed beneath, instead of upon, the lumbar 

 fascia. A portion of the parietal bone was removed to expose the 

 brain, the internal jugular vein divided at the base of the skull; 

 one electrode in contact with the blood flowing from the vein, 

 the other inserted into the cerebral mass ; the former positive 8°. 

 The electrode remaining in the brain, the other was placed in 

 contact with the external, and afterwards with the divided sur- 

 face of the lumbar mass of muscles; in both instances the latter 

 electrode was positive 5-' : if placed on the skin it was still posi- 

 tive, but not to the same extent. 



The spinal cord was divided, one electrode inserted into its 

 substance, the other in contact with the lumbar mass of muscles, 

 their external and divided surfaces ; these were positive to the 

 former 5°. 



Exp. 6. Rabbit. — Prussic acid dropped on the eye. 



One electrode inserted into the brain, as in the last experi- 

 ment, the other in contact with the blood flowing from the in- 

 ternal jugular vein; the Isittcr positive 10°. 



The external surface of the adductor muscles of the thigh and 

 blood flowing from the iliac vein were formed into a circuit; the 

 latter slightly positive. The muscular mass was divided and the 



