Leyden

(If -den). A town in Holland. L. Battery. A series of Leyden jars connected tandem. L.-blue. Same as Cobalt-blue. L. Jar, a gla jar coated within and without with tinfoil, reaching nearly to the neck, and surmounted by a knobbed conductor in connection with the inner coating. It is designed for the temporary ' ' accumulation ' ' of electricity, or rather for the preservation of the high potential to which the inner foil may be charged. It is discharged by connecting the outer foil with the knob. The jar was first made in the town of Leyden, its discovery being due to Cuneus, a pupil of Muschenbrceck. It is also called Kleistian jar or Kleists jar. Kleist was a prebendary of Cammin, in Pomerania, and is said to have invented the jar independently of Cuneus, and a year before him, viz., in 1745. L., Periodic Edema. Vomit of. Synonym of An gio neurotic Leyden's Crystals. See Charcot- Leyden Crystals.