Infected Mosquitoes.

May Be Carried by Aeroplanes.

FEARS that yellow fever and similar diseases may be carried long dis tances by aeroplanes were expressed by experts at the Ross Institute and Hospital for Tropical Diseases, London.

They state that it is possible for in fected mosquitoes to be carried from West Africa within the period of incu bation, which is sometimes three months. Experiments have shown that 22 per cent, of mosquitoes survive a 1250 miles air journey.

With the increasing use of aeroplanes in Pacific territories and groups, the day is not far distant when inter island and inter colonial communication by air will be common and this new means of spreading disease is being thoroughly in vestigated. Sir Malcolm Watson, Direc tor of Tropical Hygiene and principal of the Department of Malaria Control at the institute, proposes the establishment of a permanent committee to include representatives of Australia and the other dominions, also of mining and shipping companies, to deal with the menace.