scope in the hands of an experienced and attentive observer.
The other method of testing the temper, while not infallible, will nevertheless be of assistance even to the most inexperienced. It consists of catching the point of the blade under the thumb nail, and then letting the nail slip off quickly. If the blade gives a good clear ring, you may conclude that it is well tempered, but if it does not ring full and clear it is an indication that the blade is tempered unevenly.
The Concave Blade.
The thinnest edge is always the sharpest. A blade ought therefore to be as thin as the strength of the metal composing it will permit. Nearly all razors are now made "hollow-ground" or "concave"— a great improvement over the old style of thick blade. The edge of the hollow-ground razor is thinner and therefore cuts better, and is much easier to keep sharp.
Almost any desired make of razor may
