In your report, "Tests show pot is 'addictive as heroin'" (October
16), the researchers reach their conclusions because monkeys quickly
learned to give themselves a "hit" and "became more interested in
taking the drug" when the dose was increased.

I'm not arguing either way about the legalisation of cannabis, but if
you were confined for life in a cage, with an intravenous drip
inserted into some part of your body, would you not regard regular
"highs" as a welcome relief from your miserable existence? I would.

CHRISTOPHER A. SMITH,
6 Glebe Road, Harrogate,
North Yorkshire HG2 0LZ.