Now Mr. Plumer’s improvements proceed from two series of data. First, certain theoretical inferences from the facts above named. Finding the arches liable to break down, he supports the transverse arch by making the inner surface of the sole corresponding to it convex instead of concave transversely; he makes the middle portion of the sole convex again in both directions to support the longitudinal arch, and for the same reason extends the heel of the boot or shoe forward, so as to support the anterior portion of the heel of the foot. Secondly, Mr. Plumer takes an old shoe that has done good service, and studies the reliefs and hollows-which the foot has shaped on the inner surface of its sole. Comparing the empirical results of this examination with those based on the anatomical data above given, and finding a general coincidence in them, he constructs his last in accordance with their joint teachings. Theoretically, Mr. Plumer is on somewhat dangerous ground. If the arches of the foot are made to yield like elliptical springs, why support them? But we subject them to such unnatural conditions by pressure from above over the instep, by adding high heels to our boots and shoes, by taking away all yielding qualities from the soil on which we tread, that very probably they may want artificial support as much as the soles of the feet want artificial protection. If, now, we find that an old, easy shoe has worked the inside surface of its sole into convexities which support the arches, we are safe in imitating that at any rate. We shall have a new shoe with some, at least, of the virtues of the old one.
This all sounds very well, and the next question is, whether it works well. We cannot but remember the coat made for Mr. Gulliver by the Laputan tailors, which, though projected from the most refined geometrical data and the most profound calculations, he found to be the worst fit he ever put on his back. We must ask those who have eaten the pudding how it tastes, and those who have worn the shoe how it wears. We have no satisfactory experience of our own, having only within a week or two, by mere accident, stumbled into a pair of Plumerian boots, and being thus led to look into a matter which seemed akin to the main subject of this paper. But the author of “Views Afoot,” who ought to be a sovereign authority on all that interests pedestrians, confirms from his own experience the favorable opinions expressed by several of our most eminent physicians, from an examination of the principles of construction. We are informed that the Plumer last has been recently adopted for the use of the army. We add our own humble belief that Dr. Plumer deserves well of mankind for applying sound anatomical principles to the construction of coverings for the feet, and for contriving a last serving as a model for a boot or shoe which is adapted to the form of the foot from the first, instead of having to be broken in by a painful series of limping excursions, too often accompanied by impatient and even profane utterances.