| Show A secret it Is often very desirable to know bow to seal a letter so that it cannot bo be opened without betraying the fact steam eam or hot water will open em enie e lopes c closed mith ath mucilage and even a water wafer A hot iron or a spirit lamp ds dissolves I 1 solves sealing wax an impression in plaster having been taken of the seal by the combined use of water and sealing wax however all attempts to open the letter otherwise than by force can be frustrated all that Is necessary Is to close the letter first with a small moist wafer and to pierce the latter with a coarse needle the same applies to mucilage whereupon sealing wax may be used in the usual manner thia this seal can neither be opened by dry heat nor by mol |