21.—(1) The medical officer or a medical practitioner such as is mentioned in rule 20(3) shall report to the governor on the case of any prisoner whose health is likely to be injuriously affected by continued imprisonment or any conditions of imprisonment. The governor shall send the report to the Secretary of State without delay, together with his own recommendations.
(2) The medical officer or a medical practitioner such as is mentioned in rule 20(3) shall pay special attention to any prisoner whose mental condition appears to require it, and make any special arrangements which appear necessary for his supervision or care.