Parvoline, C₉H₁₃N.—Putrid horse flesh and mackerel.
Unnamed base, C₁₀H₁₅N.—From decomposing fibrin and jelly-fish. Like curare in its action.
Putrescine, C₄H₁₂N₁₂.—From human corpses—feebly poisonous.
Cadaverine, C₅H₁₆N₂.—From human corpses—causes suppuration.
Neuridine, C₅H₁₄N₂.—Common product of putrefaction—quite inert.
Neurine, C₅H₁₃NO.—From human corpses, intensely poisonous—resembles muscarin in its action.
Choline, C₅H₁₅NO₂.—From putrefying animal and vegetable substances—feebly poisonous; by giving up one molecule of water it changes to neurine—this may be brought about by bacteria or chemical agencies.
Muscarine, C₅H₁₃NO₂.—From putrid fish and horse flesh. The active principle of poisonous mushroom.
Gadinine, C₇H₁₆NO₂.—From putrefying codfish, haddock, and gelatine, in pure cultures of proteus vulgaris—poisonous in large quantities.
A Base (?), C₇H₁₇NO₂.—From decomposing horse flesh—its action is like curare: causes loss of temperature, rigors, convulsions, and general paralysis: the heart stops in diastole.