Pottery 3809 Poultry moulding, drying, and firing. The care of preparation increases as the grade of the ware rises, and in glazed wares a second firing is also necessary if the body must be burned be- fore the glaze is applied. Firing is the final and most important step in the making of pottery for on it depends much of the quality of the resulting object. Pottery kilns are .of three general classes: bis- cuit, glost, and enamel. The biscuit kilns are those in which the clay is changed to 'biscuit.' They reach a very high temperature, from 2,- ooo to 2,500° F. The glost or glazing kiln is similar in construction to the biscuit kiln, but usually smaller and the heat is less intense. Whiteware and porcelain are often elaborate- ly decorated, either under or over the glaze, but the style of decoration most often seen is printwork. Modern ceramics, from 1935 to 1937, has been confined for the most part to work on china. The Japanese have repro- duced many of the old shapes and patterns still popular in cheap wares, and American producers of quality china have put on the market fine earthenware, and porcelain dish- es with decorations simple even to the point of austerity. It is notable that porcelain has a hard- ness most easily discernible. The modern china contains bone ash, ironstone and feld- spar (introduced by Spode). A name of great importance in American ceramics today is that of the Walter S. Lenox organization which still carries on the traditions of the Mintons, Spodes and others renowned in American pottery. Figurines are popular for decoration to- day. Ceramists are using a wider range of animals than ever before and the classes of human figures and groups are nearly end- less including the interpretive element of humor and the visible influence of athletics. These figurines are sculptured in metal, wood, plaster and porcelain glazed as finely as china. Some of the outstanding ceramists are: Wayland Gregory and Genevieve Thomas; and prominent among the Germans is Ru- dolph Struck. Gayety and abundant decorative sense— typical of modern things originating on the European continent—make it comparatively easy to identify the influence of Austrian and French artists on many of the modern Ameri- can figurines. There are, however, many in the American field today whose art is alive with a freshness and an originality that tna'ke it really important and individual. Pottstown, buruimh. Pennsylvania, in Montgomery cu., on the Schuylkill River, 40 m. n.\v. of Philadelphia. It is an important manufacturing center, the production of iron and steel ccoods being especially large. Other products are agricultural implements, silk, hosiery and bricks; p. 24,530. Pottsville, city, Pennsylvania, county seat of Schuylkill co., on the Schuylkill River. In- dustries include the manufacture of structur- al steel, iron, lumber, furniture, shoes, tex- tiles, and clothing. The district contains ex- tensive deposits of anthracite; p. 20,194. Poughkeepsie, city. New York, county seat of Dutchess co., on the e. bank of the Hudson River, 75 m. n. of New York City. It is the seat of Yassar College. There are manufactures of mowing and reaping ma- chines, cream separators, horseshoes, knit goods, underwear, shoes, shirts, cigars, auto- mobile accessories, hardwear, trousers, dyes, cough drops, chairs, buttons, etc.; p. 40478. Poulsen, Valdemar (1869-1942), Danish inventor. He devised (1900) the telegraphone, an apparatus for magnetically recording tele- phone conversations and discovered the Poul- sen arc and the Poulsen wave upon which the Poulsen system of wireless telegraphy is based. See WIRELESS TELEGRAPHY. Poulson, Niels (1843-1911), manufactur- er and philanthropist, was born in Denmark, and went to America, where he formed a partnership with Charles M. Eger, and in 1897 the firm was incorporated as the Hecla Iron Works. He gave $100,000 for the purpose of exchanging lectures and students between the United States and Scandinavia. His for- tune of $500,000 was left to the same cause. Poultice, or Cataplasm, any soft, moist pultaceous mass employed for the external ap- plication of moist heat to the body. The effect of a poultice is to produce dilatation of the blood-vessels where it is applied, and so to relieve congestion, pressure, and pain. Poultry and Poultry Farming. The word poultry is a general term for that group of domestic birds which includes the ordinary domestic fowl, the turkey, guinea fowl, pea- fowl, pheasant, duck, and goose. It does not include pigeons or cage birds. The birds of the poultry group are of economic value for their flesh and eggs, which are among the most valuable of foods. The most important of the birds of the poultry group, economic- ally, is the ordinary domestic fowl, or chicken. Domestic Fowl.—The most popular general purpose breeds of domestic fowl, i.e., breeds which are adapted both to egg production