378 D. OGATA AND SWALE VINCENT 



skin produce a rise. Under morphia and curare, on the con- 

 trary, a rise is a usual response, due clearly to a specific pharmaco- 

 dynamical influence of these drugs. But under morphia a weak 

 stimulus will produce a fall. 



6. The influence of the ductless glands (adrenal, thyroid, and 

 pituitary) upon vasomotor reflexes is not clear.* The injection 

 of adrenin, thyroidin, and pituitrin and tying off or extirpation 

 of the glands produced in our experiments no distinct effect. 



7, The reflex change (fall or rise) of blood-pressure on stimu- 

 lation of the somatic nerves (sciatic, saphenous) is produced 

 chiefly by the dilatation or constriction of the blood-vessels in 

 the splanchnic area, as in the cases of the stimulation of the 

 splanchnic and the depressor nerve. 



'See footnote, page 375. 



