The findings of the Inter-Departmental Committee on Physical Deterioration were more definite and striking. To take first the evidence as to the extent of underfeeding, Dr. Eichholz, after careful investigation, estimated that the rough total of underfed children in London was 122,000 or 16 per cent. of the elementary school population. These figures were based on the assumption that all the children being fed at schools and centres would otherwise have gone unfed; but, considering the loose method of enquiry prevalent, this was questionable. The London School Board put the number at 10,000, but this seems to have been grossly understating the case.[90] In Manchester, according to the estimate of the Education Committee and the Medical Officer of Health, not less than 15 per cent. were underfed.[91] The evidence given was, however, conflicting, and indeed little reliance can be placed on these statistics. Footnote 90: Report of Inter-Departmental Committee on Physical Deterioration, 1904, p. 66, pars. 332-334; evidence of Dr. Eichholz, Qs. 471-476. Footnote 91: _Ibid._, p. 67, par. 335; evidence of Dr. Eichholz, Q. 476. With regard to the effect of underfeeding on the physique of the children, the doctors gave striking testimony. Dr. Robert Hutchison was of opinion that, if a child had not sufficient food during the period of growth, that is during the school years, it would be permanently stunted.[92] "Apart from infectious diseases," said Dr. Collie of the London School Board, "malnutrition is accountable for nine-tenths of child sickness."[93] Dr. Eichholz pointed out that at Leeds Dr. Hall had found that fifty per cent. of the children in a poor school suffered from rickets, the true cause of which was poor and unsuitable food, whilst in a well-to-do school the proportion was only eight per cent.[94] In the opinion of this witness, an opinion "shared by medical men, members of Education Committees, managers, teachers and others conversant with the condition of school children ... food is at the base of all the evils of child degeneracy."[95] "The sufficient feeding of children," declared Dr. Niven, Medical Officer of Health for Manchester, "is by far the most important thing to attend to and ... specially important in connection with the Army.... When trade is good," he argued, "you will have to rely for the Army upon this very poor class, and in order to get good soldiers you must rear good children, you must see that children are adequately fed."[96] Footnote 92: