Trimethylamine, (CH₃)₃N.—Various decomposing animal and vegetable tissues, ergot—poisonous in large quantities.
Ethylamine, C₂H₅NH₂.—Beet-sugar, wheat-flour—non-poisonous.
Diethylamine, (C₂H₅)₂NH₂.—Putrid fish and sausage—non-poisonous.
Triethylamine, (C₂H₅)₃N.—Putrid fish and sausage—non-poisonous.
Propylamine, C₃H₇NH₂.—From cultures of bacteria of fæces—non-poisonous.
Butylamine, C₄H₁₁N.—From cod-liver oil. Diaphoretic and diuretic—in large doses causes vomiting and stupor.
Iso-amylamine, (CH₃)₂·CH·CH₂CH₂NH₂.—Decomposing yeast and cod-liver oil—active poison, causes convulsions and death.
Caproylamine, C₆H₁₅N.—Called septicin by Hager.
Collodine, C₈H₁₁N.—The first ptomaine obtained in a chemically pure condition—from putrid horse flesh, pancreas, gelatine, and mackerel.
Hydrocollodine, C₈H₁₃N.—Putrefying horse flesh and mackerel—highly poisonous.