Sir,

Colin Ramsay (Letters, 14 Feb) says there seems to be no learning
curve in the matter of drugs control. I agree; I despair to see people
repeating these myths as facts.

If there are mental hospitals full of cannabis victims, why did
the Lancet say in 1995: "The smoking of cannabis even long term, is not
harmful to health"? Even the DEA has stopped most of these unfounded
claims.

The reason the Egyptians made these claims was to protect their
cotton crop against hemp which was about to become a very viable
alternative due to the invention of a new harvesting machine in 1937.

It is incredible that many people still believe that old "reefer
madness" propoganda.

Yours truly,
Hugh Robertson