Another effect is the _growing in_, or to _one side_, of the nails. The boot-upper presses the flesh against the nail of the great toe on one side, while there is a similar pressure from the smaller toes on the opposite side, and between both, the nail is almost compelled to grow into the flesh, if it grows at all. If the great toe gets the advantage, then the one next to it is likely to suffer in the same way, and all of them are liable to the same trouble. When the nail grows so far that its edge turns downward, the pressure against the sole, in walking or standing, is a more aggravated discomfort. Dr. Meyer says that “by degrees it [the toe] gets into a state of chronic inflammation, and may eventually become ulcerated, producing what is popularly known as ‘proud flesh.’ The ailment not only interferes with the use of the foot, but too often requires, for its relief, medical, and even operative interference.” A surgical operation of this kind, which consists in removing the nail entirely, we are assured, by those who have seen it, is an intensely painful thing to witness, and cannot be less so to be borne. The following description of the nature of the trouble, and of the mode of treatment, is copied from Dr. R. T. Trall, for the benefit of those who may wish to treat it for themselves. “_Onyxis._—This distressing affliction consists in an incurvation of the toe-nail from a bruise or the pressure of a tight shoe, producing inflammation and ulceration, and followed eventually by fungous growths, or proud flesh, which is exceedingly tender and painful. The cure is slow but certain. The foot must be frequently soaked in warm water, until the soreness is so far abated that it can be handled without pain; then, with a probe, press pledgets of lint as firmly as can be borne under the most detached point of the nail, pressing them also between the nail and projecting portions of the flesh, as far as possible. Cover these with the wet compress, and apply a moderately tight bandage over the whole, frequently wetting the whole with warm, tepid, or cold water, as either temperature is most agreeable. The lints are to be pressed farther and farther under the nail, from time to time, and the foot should be soaked and dressed once or twice daily. When portions of the nail become free they may be cut off, and mild caustics may be employed to remove fungous or indurated growths, which do not yield to the other measures of treatment.”