Chemistry, is the sweetening any matter impregnated with salts, by frequently washing it in pure water.

Dull, in the manege. The marks of a dull horse, called by the French marques de ladre, are white spots round the eye and on the tip of the nose, upon any general colour whatsoever. Though the vulgar take these spots for signs of stupidity, it is certain they are great marks of the goodness of a horse; and the horses that have them are very sensible and quick upon the spur.

Dullart, Heiman, a Dutch painter and poet. He was a pupil to Rembrandt, for whose works the few he left are often mistaken. He died in 1684.

Dumarsais, Cesar Chesnau, a French writer on Grammar. See Supplement.