Just as good a leg in every way is made for $50 as is made for $70, the difference in price being determined wholly by the time the warranty is made to cover. If undetermined as to which leg would be best adapted to any particular case, and it is left to our judgment to select, upon receipt of measurements and full particulars we will construct the one we honestly and conscientiously believe will give the most lasting and comfortable service. We are equally interested with the purchaser in doing this, as the continued good name of our establishment, as well as our future prosperity, depend wholly upon the durability of our work and the comfort with which it is worn. _Ball-and-Socket Ankle Joint_ This joint is formed by a polished glass ball plying in a socket of vulcanite, the foot and ankle being joined together with four tendons, passing through rubber springs in the ankle; this joint admits of every motion the natural ankle has. In walking on the side of a hill or inclined plane, or where the foot is used to brace the body, the ankle flexes laterally and the foot remains flat on the ground, thus giving a firm base of support. The motion closely imitates the movement of the natural ankle, and this joint is desirable for light work and short, tender stumps. Notwithstanding it is more complicated than any of our other styles, requiring more care and attention, there are hundreds of people using it with such comfort and satisfaction that under no circumstances whatever could they be induced to use any other. No. 216, on page 40. _Double Ball-and-Socket Ankle Joint_ This joint is a unique invention, and the idea of its construction was suggested by the single ball-and-socket joint. It consists of two polished glass balls plying in sockets of fibre. There is no substance that could be used for this purpose that presents a harder, smoother surface than glass, and when in the shape of solid polished spheres, plying in perfectly fitted sockets, they are practically indestructible; there is no such thing as wearing them out. A linked steel rod and a back and front tendon securely connect the foot and ankle. The tendons, also the rubber springs, are the same as used in all of our legs, and are applied in the same manner. This is a somewhat lighter joint than the army and navy joint and is recommended for persons of light or medium weight. No. 217, on page 40. _Army and Navy Ankle Joint_