358 Dr. W. M. Bayliss. On Reciprocal [Jan. 20, 
Fie. 15.—Effect of increasing dose of strychnine on the depressor fall in the rabbit. 
blood-pressure on excitation of depressor nerves under the action of 
strychnine is constriction of peripheral arterioles, it is well, at the outset, 
to make no error as to this fact. Fig. 16 shows that, coincidently with the 
rise of arterial pressure, there is a constriction of the intestine. Before the 
injection of the drug, this cat gave the result always obtained on excitation 
vl 
“mon lh | 
ws v aie - 
irk Hal 
Le i 
yi | 
i Mi Mt HY iM i t 
| “a 
Nba 
Ney 4 1 4 iva) 
Fig. 16.—Peripheral vaso-constriction produced Fic. 17.—Vaso-constriction in spleen produced by 
by depressor excitation after strychnine (Cat). depressor excitation after strychnine. Upper 
Upper curve, blood-pressure. Lower curve, curve, volume of spleen. Lower curve, arterial 
volume of intestine. pressure. Zero, 32 mm. below signal of excitation. 
