30 MARCH 1929, Page 13

COLLECTIVE AND SPECIALIST INTERCHANGES.

This world-wide system of medical interchange is roughly of two kinds :- (a) The Collective Interchange, where about twenty medical officers spend six weeks studying the health administration of one, or at most two, foreign countries.

(b) The Specialist Interchanges, where experts in some subject visit a number of countries to see the way their particular problem is dealt with in each.

Practically all countries, including the United States, Russia and Turkey, take part in this pooling of medical problems and their co-operative solution. Two or three of the Collective Groups are sent out every year and two or three batches of specialists in industrial and school hygiene, in malaria, tuberculosis, vital statistics, port sanitation or sanitary engineering have also been paying annual visits to the countries of their choice. About one hundred medical officers go out yearly on one or another of their interchanges, to the great benefit of both visitors and visited.