Those feet that tread _outside_ need exactly the same treatment recommended for the others, only, in the shoes made for them, it must be directed in a way exactly opposite. The stiffness of the counter must be on the outside, as also the guarding of the heel. The last must be straight and _very full_ upon the _inside_. The main bulk of the wood between the heel and instep should be on that side, projecting well over the bottom at the ball, while it is spare, thinned, or hollowed on the other. The bottom should be thinned off at the inner edge, so that when placed upon a level surface it seems to lean that way. In a word, it will look as though it would fit beautifully a foot that treads _inward_. _Then it is just adapted for one that goes outward._ The whole shape and fit of a boot made upon such a last exerts an easy pressure, tending to right up the foot and force it to tread on the opposite side. The principle has not heretofore been generally recognized. Let it not be forgotten that the last that would appear to fit a foot that treads outward is just the one to be used for a foot that goes inward, and _vice versa_. When this is acted upon, the principal step is taken in overcoming the difficulty. But as many persons having such feet preserve the natural form of them by treading the boots outside, it is about as well to let them go so, as attempt to right them up, even if a little more leather is thus worn out. On the contrary, when the tendency is to tread _inside_, the remedy can not be applied too soon if it is wished to avoid the big joints that result from such a habit. Without the lasts here mentioned, however, a little temporary improvement can still be effected in those feet that tread over but slightly, by what shoemakers call “working under” the sole of the shoe on the side opposite that which treads over, and by also putting a piece of leather on the last _above the sole or bottom_, to make room in the upper at that side without increasing the width of the sole. The _sole_ may be “worked full” on the _treading-over_ side at the same time. Feet that tread outside generally, if not always, have good arches. The directions here given, if put in practice by a shoemaker who can appreciate and apply them thoroughly, will, it is believed, straighten up and cure any case of treading-over feet that can be helped at all. And this probably includes the majority of instances. The adoption of such lasts has never been fairly tried, as far as we know, and we are quite confident they will prove successful.