Emotions are important factors in the aetiology of many diseases and may lead to organic changes. An individualï¿½s capacity to withstand frustration will depend on his emotional maturity. The immature personality - like the child-loves no one but himself and cannot withstand frustration. Sooner or later he will develop psychological or physical illness. The mature personality -characterised by self-denial is likely to remain well. National immaturity and ill-health (wars) are analogous to individual immaturity. Both can be prevented by improvement of the individual in ethical first principles.
The results of malaria control carried out from 1942 to 1944 are presented in graphs and future prospects outlined. The opinion is expressed that the military malaria control will undergo a complete change with the extended use of suppressive mepacrine, D.D.T. and impregnated repellent nets.