II. Substances retarding the heart’s action.
a. An induction current of electricity, acting energetically.
b. Ammonia, acting energetically.
c. Ethyl ether, acting energetically.
d. Oxalic acid, acting energetically.
e. Carbolic acid, acting energetically.
f. Veratrine, acting energetically.
g. Atropine, acting energetically.
h. Aconitine, acting energetically.
i. Potassium nitrate, acting energetically.