CEMENT, in a general sense, any glutinous substance capable of uniting and keeping things together in close cohesion. In this sense the word cement comprehends mortar, soder, glue, &c. but has been generally restrained to the compositions used for holding together broken glasses, china, and earthen ware. For this purpose the juice of garlic is recommended as exceedingly proper, being both very strong, and, if the operation is performed with care, leaving little or no mark. Quicklime and the white of an egg mixed together and expeditiously used, are also very proper for this purpose. Dr Lewis recommends a mixture of quicklime and cheese in the following manner: "Sweet cheese shaved thin, and stirred with boiling-hot water, changes into a tenacious slime which does not mingle with the water. Worked with fresh particles of hot water, and then mixed upon a hot stone with a proper quantity of unslacked lime, to the consistency of a paste, it proves a strong and durable cement for wood, stone, earthen ware, and glass. When thoroughly dry, which will be in two or three days, it is not in the least acted upon by water. Cheese barely beat with quicklime, as directed by some of the chemists for luting cracked glasses, is not near so efficacious." A composition of the drying oil of linseed and white lead is also used for the same purposes, but is greatly inferior.