Here's something from the 1911 Britannica that should add nothing but confusion to the topic:

SUPEREROGATION


tendency to death from heart failure, rest in the rectimbent position, the use of diffusible stimulants, such as ammonia or ether, &c., together with friction or warmth applied to the extremities, are the means to be adopted. Where, on the other hand, the symptoms are those 01 apoplexy or of hyperpyrexia, by far the most successful results are obtained by the use of cold (the cold affusion, rubbing the surface with ice, enemata of ice-cold water).