Studies of American Fungi. Mushrooms, Edible, Poisonous, etc.Atkinson, George Francis
Science
Studies of American Fungi. Mushrooms, Edible, Poisonous, etc.
Atkinson, George Francis
Cooking (Mushrooms); Fungi -- United States; Mushrooms
Fortunately muscarine has a very unpleasant taste. It is interesting in
this connection to note that the _Amanita muscaria_ is said to be used
by the inhabitants of Northern Russia--particularly the Koraks--as a
means of inducing intoxication. To overcome the extremely unpleasant
taste of the plant they swallow pieces of the dried cap without chewing
them, or boil them in water and drink the decoction with other
substances which disguise the taste.
The symptoms of poisoning with muscarine are not at once evident, as is
the case with several of the less virulent poisons. They usually appear
in from one-half to two hours. For the symptoms in detail we shall quote
from Mr. V. K. Chestnut, Dept. of Agr., Washington (Circular No. 13,
Div. of Bot.): "Vomiting and diarrhoea almost always occur, with a
pronounced flow of saliva, suppression of the urine, and various
cerebral phenomena beginning with giddiness, loss of confidence in one's
ability to make ordinary movements, and derangements of vision. This is
succeeded by stupor, cold sweats, and a very marked weakening of the
heart's action. In case of rapid recovery the stupor is short and
usually marked with mild delirium. In fatal cases the stupor continues
from one to two or three days, and death at last ensues from the gradual
weakening and final stoppage of the heart's action."
The treatment for poisoning by muscarine consists primarily in removing
the unabsorbed portion of the mushroom from the alimentary canal and in
counteracting the effect of muscarine on the heart. The action of this
organ should be fortified at once by the subcutaneous injection, by a
physician, of atropine in doses of from one one-hundredth to
one-fiftieth of a grain. The strongest emetics, such as sulphate of zinc
or apomorphine, should be used, though in case of profound stupor even
these may not produce the desired action. Freshly ignited charcoal or
two grains of a one per cent. alkaline solution of permanganate of
potash may then be administered, in order, in the case of the former
substance, to absorb the poison, or, in the case of the latter, to
decompose it. This should be followed by oils or oleaginous purgatives,
and the intestines should be cleaned and washed out with an enema of
warm water and turpentine.
Experiments on animals poisoned by _Amanita muscaria_ and with pure
muscarine show very clearly that when the heart has nearly ceased to
beat it may be stimulated to strong action almost instantly by the use
of atropine. Its use as thus demonstrated has been the means of saving
numerous lives. We have in this alkaloid an almost perfect physiological
antidote for muscarine, and therefore in such cases of poisoning its use
should be pushed as heroically as the symptoms of the case will warrant.
The presence of phallin in _Amanita muscaria_ is possible, and its
symptoms should be looked for in the red color of the blood serum
discharged from the intestines.
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