relation between the nervous and sanguiferous systems. 445 
applied to the nervous system, that of the heart continues as 
long as the stimulus is applied. Exp. 7. 
9. That the muscles of voluntary motion are excited by 
stimuli applied to very minute parts of the nervous system. 
Exp. 2, 3, 4. 
10. That no stimulus applied to any minute part of the 
nervous system, can excite the heart. Exp. 8, 9, 10. 
11. That the heart obeys a much less powerful stimulus 
than the muscles of voluntary motion. Exp. 3, 4, & c. and 
observations after Exp. 10. 
12. That the facts expressed in the three last sentences 9, 
10, 11, afford an easy explanation of those expressed in the 
preceding sentences. See the observations after Exp. 10. 
% 
13. That the power of the blood vessels, like that of the 
heart, is independent of the nervous system. Exp. 1, 11. 
14. That the blood vessels can support the motion of the 
blood after the heart is removed. Exp. 12. 
15. That the blood vessels are directly influenced through 
the nervous system in the same way that the heart is. Exp. 
1 5 - 
16. That analogous to what we observe in the heart, no 
stimulus or sedative applied to the nervous system, excites 
irregular action in the blood vessels. Exp. 16. 
17. That the power of the blood vessels, like that of the 
heart, may be destroyed through the nervous system. Exp. 
17,18. 
18. That the office of the ganglia is to combine the influ- 
ence of the various parts of the nervous system, from which 
