On inhaling about six quarts, the first altered feeling was a tingling
in the elbows not unlike the effect of a slight electric shock. Soon
afterwards, an involuntary and provoking dizziness as in drunkenness.
Towards the close of the inhalation, this symptom decreased; though
the nose was still involuntary held fast after the air-bag was
removed. The dose was probably an undercharge, as no extraordinary
sensation was felt more than half a minute after the inhalation.