Sometimes by accident, there is seen some cement pressed out, adhering to the upper, caused by fitting the sole too full, or pressing over too far. In such cases it can be readily removed after the sole has been properly wet, by the use of a _thick_ knife. Its edges must be _round_ and _smooth_ so that it will not cut or mar the upper. Warm the knife sufficiently to soften the cement, then the outer sole may be set off from the upper at a proper distance, sufficiently to pare the edge neatly in finishing. _Caution._—Great care must be used in the use of the warm knife. If too hot, it burns the leather upper. The finisher will soon learn the precise heat required. Having given full instructions concerning the manufacture of the gutta-percha cemented shoe, we will now proceed to the process of repairing _every description_ of boots and shoes, pegged, sewed, or cemented. A discovery of great practical importance involving cheapness, lightness, quickness and wonderful durability, rendering them _water-proof_ on the sole, thus affording a protection against wet, or dampness to the most delicate shoe; an invaluable consideration when we remember that the primary cause of nine-tenths of the colds that are experienced, arise from damp or wet feet, which cannot be prevented by the old process. Every considerate mind must acknowledge the great advantage thus gained by the water-proof sole. The sole thus prepared being a _non-conductor_ of _heat_, the shoe retains its warmth, no matter how damp or cold the surface of the earth may be. Shoes or boots thus prepared may be emphatically denominated “_health preservers_.” INSTRUCTIONS FOR PREPARING TAPS OR SOLES FOR REPAIRING. First to prepare leather taps, fit them in the usual manner, by “skiving” or shaving off the proper portions of the sole or tap to the desired thinness. The stock being _perfectly dry_, next raise a thick fibre, and cement as before described, for outer soles, As a rule the cement will dry in the space of an hour, or even in _much less_ time, if desired. INSTRUCTIONS FOR PREPARING THE BOOT, OR SHOE, TO BE REPAIRED. Shave off the various portions in the usual manner of repairing. The soles should be clean and dry. Now raise a strong fibre, with a rasp or card, then cement the loose or broken parts of the old sole, if any, fully. When dry, the sole or _tap_ being in the same condition of _dryness_, properly heat them in the “Heater,” as described for putting on the outer sole. Hammer and rub them so that the tap shall unite _firmly_ to the shoe. Let them remain until cool, say from four to six minutes. Then wet and finish as before described. It is desirable to have a quantity of taps on hand, ready for use when wanted. Stock thus prepared will be sure to adhere, if properly put on, until worn off, unless removed by _improper_ exposure to heat.