symptoms of narcotic poisoning advance for the most part gradually: but
those of apoplexy in general begin abruptly. Sometimes apoplexy
commences at once with deep sopor. Narcotic poisoning never begins in
that way, except in the instances of hydrocyanic acid and the narcotic
gases; the sopor is at first imperfect, and it increases gradually,
though sometimes very rapidly. Apoplexy, however, does not always begin
with deep sopor; occasionally the sopor begins and increases like that
of narcotism.