DDD
DDT
Paris green
antimony
arsenic trioxide
beryllium
bichloride of mercury
cadmium
carbolic acid
carbon monoxide
carbon tetrachloride
chlorine
cyanide
hydrocyanic acid
hyoscyamine
lead
mercuric chloride
mercury
mustard gas
nicotine
phenol
poison gas
prussic acid
selenium
strychnine
arsenious acid
ratsbane
white arsenic
chemical element
element
trioxide
alum
ammonia
boron
chloroform
chromium
iodine
nitrogen
oxide
phosphorus
potash
potassium
sulphide
sulphur
tellurium
zinc