Show r I I Keeping Cool When Its It's Hot I Ir I By SCIENCE iCE SERVICE r r LONDON July 2 Heat 2 Heat alone is the cause of oC heat stroke and ultraviolet ultraviolet ultraviolet ultra ultra- violet rays have no part in its Us production production production pro pro- it appears from experiments reported to the tho Royal Society of Tropical Medicine here by Dr Frank Marsh pathologist to the Per Anglo sian Oil company Dr Marsh studied the effect c of oC the sun on rabbits under varying condi condi- In one experiment the rabbits rabbits rab rab- rab-I rab bits were entire entirely I 1 y HOW now TO exposed to t the h 11 e AVOID sun but half of HEAT BEAT them were ere k kept e p t STROKE damp by repeated s spraying p ray I n g with water ater The effect of oC the spraying could be only that of oC cooling as asi mere mero wetting could not keep the suns sun's rays from Crom penetrating the rabbits rabbits' fur Dr Marsh explained In In the damp rabbits no heat stroke elo developed d and there was no marked rise rise In temperature except In one whose fur was accidentally allowed to dry dry- In the dry rabbits on the theother theother theother other hand only two out or of 15 survived survived survived sur sur- the rest succumbing to heat stroke Bright sunlight and sun ob obscured obscured ob- ob by cloud and smoke caused heat stroke equally well Dr Marsh found round In another experiment the rabbits had bad their shaved sha heads exposed while their bodies were ere kept cool in a special box in an ice fee Jacket After prolonged exposure the r rab rabbits b- b bits were killed and carefully ex ex- ex No change was found in the nerve cells of their brains I It was wu Impossible to injure rabbits rabbIts rabbits rab rab- bits by exposing their heads to the sun provided their bodies were ere kept cool the experiment showed On the other hand an albino rabbit with its head kept cool In the box and its body exposed to the sun died after aCter half haIr an hours hour's exposure Dr Marsh concluded that the rays of the sun had no direct action on the br brain ln ti tissue sue of an exposed rab rab- bit He Heas was as uncertain whether it could be assumed that these results applied also to man Dr Marsh said his experiments In in that the many different diseases diseases diseases dis dis- dis- dis eases with varying symptoms which are arc ascribed to the effect of the sun are really one disease He suggested the name due to heat for this disease means a high degree of fever |