§19-] CLASSIFICATION OF POISONS. 25 
The above division groups together various miscellaneous toxic 
principles, none of which can at present be satisfactorily classified. 
E.—POISONS DERIVED FROM LIVING OR DEAD 
ANIMAL SUBSTANCES. 
DIVISION I.— Poisons secreted by the Living. 
1. Poisonous amphibia. 
2. Poison of the scorpion. 
3. Poisonous fish. 
4. Poisonous insects—spiders, wasps, bees, beetles, etc. 
5. Snake poison. 
6. Mammalian poison. Adrenalin. 
DIVISION II.— Poisons formed in Dead Animal Matters. 
1. Ptomaines. 
2. Poisoning by putrid or changed foods—sausage poisoning. 
F.—THE OXALIC ACID GROUP. 
G.—INORGANIC POISONS. 
DIVISION I.— Precipitated from a Hydrochloric Acid Solution 
by Hydric Sulphide—Precipitate, Yellow or Orange. 
Arsenic, antimony, cadmium. 
DIVISION II.— Precipitated by Hydric Sulphide in Hydro¬ 
chloric Acid Solution—Black. 
Lead, copper, bismuth, silver, mercury. 
DIVISION III.— Precipitated from a Neutral Solution by 
Hydric Sulphide. 
Zinc, nickel, cobalt. 
DIVISION IV.— Precipitated by Ammonium Sulphide. 
Iron, chromium, thallium, aluminium. 
DIVISION V.— Alkaline Earths. 
Barium. 
