230 



THE DUCTLESS GLANDS 



was led to this conclusion by the observation that after removal 

 of the adrenal bodies from the circulation, the limb does not 

 constrict, but follows passively the blood-pressure. Our own 

 results enable us to confirm this observation (see Figs. 54 

 and 56), 



Although suppression of adrenal function does not appear 

 to affect the alteration in blood-pressure brought about by vaso- 

 motor reflexes, yet it seems exceedingly probable from the above 



FIG. 53. Same dog as in Fig. 52. In this tracing we see the effect of stimu- 

 lating the right splanchnic after the adrenal veins had been clamped on 

 both sides. 



experimental results that, even when the limb is intact, the 

 adrenals must play a considerable part in determining the dis- 

 tribution of blood in the body, when a stimulus is applied to an 

 afferent nerve. It can scarcely be imagined that the presence 

 of a nerve-supply can totally mask the action of the chemical 

 agent. But it is difficult to be certain that the adrenal bodies 

 play a part in vasomotor reactions in the normal state of the 

 animal. 



