(a)   The spinal cord : Strychnina

(b)   The brain and medulla oblongata :

Atropina

Caffeina

Camphora

Depressants :

(a)   To paralyze sensation (general anesthetics) :

Mther

iEthylis Chloridum

Chloroformum

(b)   To induce sleep and rest (hypnotics or narcotics) :

Alcohol

Chloralum Hydratum

Codeina

Morphina

Opium

Paraldehydum

Scopolamine Hydrobromidum

Sulphonethylmethanum

Sulphonmethanum

Veronal

(c)   To relieve pain (analgetics or anodynes) :

Acetanilidum Acetphenetidinum Acldum Salicylicum Alcohol

Antlpyrina

Aspirin

Chloralum Hydratum

Codeina

Methylis Salicylas Morphina Sodii Salicylas