No, nor do I say that more than a percentage of these were invalided out of the Army. The Ministry of Health Circular recommends the resources of the British Social Hygiene Council for the important work of public instruction in regard to this disease. I mention this because the work of education in connection with this disease is a very difficult matter. It requires highly trained teachers who are able to illustrate their lectures with very instructive films which have been prepared by the council. But once again the Ministry regret that they cannot make any financial contribution towards this work, although they suggest that local authorities should use the council. They commend the council as a competent body for the purpose, but leave the council to spend their time collecting funds for work directly, affecting this very urgent matter. I suggest to the Under-Secretary that the Air Force should make use of these trained teachers and that they should show their films in the aerodromes and training establishments and thus contribute very much towards the protection of these men against infection. The occurence of infection, even in the Air Force, where it is at such a satisfactory figure, varies very largely in different stations, and the incidence becomes heavy in Malta, the Middle East, and the Far East, where disease is rife. It is necessary that these young fellows should be prepared not only for the dangers they encounter here but for the dangers they will encounter on foreign service. In conclusion, I think both the matters I have mentioned are important. Firstly, let us take early advantage of the desire of women medical officers to serve in the Royal Air Force Medical Service, more especially in connection with the Women's Auxiliary Force, and secondly let us realise that education is of prime importance if we are to maintain the health of our flying men in the difficult work they are doing.