CAriLLAliY DILATATION AND INTERNAL RESPIRATION. 373 



stration seems to me to be indicated also in spasmodic asthma, 

 when the arterialisation of the blood is also impaired. In angina 

 pectoris it will act when given internally, but a larger dose is 

 required than when inhaled ; and it remains to be seen whether 

 it can be given in cholera in sufficient doses to relax the capil- 

 laries without, at the same time, injuriously impairing the re- 

 spiratory changes in the blood and tissues. 



