"I never saw the peculiar bending of the lower ends of the thigh bones before I came to Leeds. At first I thought it was rachitis, but I was soon led to change my opinion in consequence of the mass of patients who presented themselves at the hospital, and the appearances of the disease at an age (from the fourteenth to the eighteenth year) in which children are usually not subject to rachitis, as well as by the circumstance that the malady had first appeared after children began to work in the mills. Thus far I have seen about a hundred such cases, and can, most decidedly, express the opinion that they are the consequences of overwork. So far as I know they were all mill children, and themselves attributed the evil to this cause. The number of cases of curvature of the spine which have fallen under my observation, and which were evidently consequent upon too protracted standing, was not less than three hundred." Precisely similar is the testimony of Dr. Ray, for eighteen years physician in the hospital in Leeds: {153a} "Malformations of the spine are very frequent among mill-hands; some of them consequent upon mere overwork, others the effect of long work upon constitutions originally feeble, or weakened by bad food. Deformities seem even more frequent than these diseases; the knees were bent inward, the ligaments very often relaxed and enfeebled, and the long bones of the legs bent. The thick ends of these long bones were especially apt to be bent and disproportionately developed, and these patients came from the factories in which long work-hours were of frequent occurrence."