Cave or Cav/ern

[R. cavus, hollow.] A hollow place underground. Among the most interest¬ ing caves are the Mammoth Cave of Kentucky; Fingal’s Cave, a basaltic cave in Staff a, Scotland; the Adelsburg caves, in Carniola and the Ruray cave, in Virginia. Many caves contain splendid stalactites and stalagmites. Mammoth Cave has OF COMMON THINGS 33 been penetrated for 10 miles, and contains a river and many splendid apartments. The greatest caves occur in limestone strata. Primi¬ tive man seems to have dwelt in caves, and bones and implements left by him have been found there. [R.] An evergreen tree with spreading branches and hard red wrood with a fragrant smell. The chief varieties are the cedar of Rebanon, the white cedar, the American red cedar, the Spanish cedar. Cedar has a pleasant smell, and is much used for making chests and cabinets. The red cedar of Florida is largely employed in making lead pencils. [Fr. from Gk. chelidon, a swallow.] A plant like a poppy, with yellow flowers, sup¬ posed to come and go with the swallows. It is used as a medicine in jaundice and for warts. [Fr.] A vegetable of the Parsley family of which the blanched leaf-stalks are used as a relish for food. [R.] One of the smallest parts of a plant or animal. All cells have their origin in the primary cell from which the organism was DANIEL'S CELL. developed. Also in electricity ajar or ve el, or a division of a ve el, for holding the fluid of a battery. Daniels’ cell. Z, Zinc rod in porous pot Py containing dilute sulphuric acid; C, cop¬ per in outer ve el containing copper sulphate solution. Also a room in a prison, a sleeping room in a monastery, a small cavity or hollow7 place. An ivory-like compound of camphor and collodion. It is made into knife handles, pianoforte keys, billiard balls, shirt collars and cuffs, and many other things, and used instead of gla for photographic dry plates. A substance which is the basis of almost all vegetable fabrics. It has recently come into use as a lining for war ships to prevent the inflow of water through shot holes. It does this 609