Mind and molecule : neurotransmission in context -- Opium and the opioids -- Depressants : alcohol, benzodiazepines, barbiturates -- Stimulants : nicotine, caffeine, cocaine, amphetamines -- Antipsychotics and antidepressants -- Psychedelics : LSD to XTC -- Dissociatives and cannabinoids : PCP, THC, ETCs -- HONC : the four key elements -- Return to the second dimension -- How shall I bond thee? : let me count the ways -- Through the looking-glass