FLOOR TILE, WALL TILE AND DRAIN TILE. 287 



tile, part from New Jersey and part from other localities, with the 

 following results : 



Table showing absorption of floor tile. 



Per cent, of 

 Color. Absorption. 



White, -0.031 



Gray, o -0.5 



Green, 1.6 -6.63 



Red, 1.30-3-11 



Blue, -3.59 



Light blue, 0.34-2.5 



Black, o -5.39 



Pink, 0.80-3.70 



Light green, 0.86-4.44 



Slate, 0.03-1.5 



Red brown, 3-8 -47 



Buff, 1.7-3.3 



Langenbeck 1 claims that floor tile should not take up more than 

 3 or 4 per cent, by weight of water, as otherwise it is difficult to 

 keep the dirt from grinding into' their pores. 



New Jersey floor tile industry. — Floor tile are manufactured 

 by the following firms in New Jersey : 



Trent Tile Company, Trenton ; 



Old Bridge Enameled Tile Works, Old Bridge; 



Eagle Tile Company, Keyport ; 



Mosaic Tiling Company, Matawan. 



The clays used are mined only in part in New Jersey, some 

 being obtained from Pennsylvania, Florida, North Carolina, and 

 England. The products are shipped not only to various states 

 but also to foreign countries. 



WAI.Iv TILE. 



These are quite different from- floor tile in character of body and 

 style of decoration. The body is made of white-burning clay, 

 and is not burned to vitrification, but on the contrary is usually 

 just hard enough to resist scratching with a knife. It is, therefore, 



1 Chemistry of Pottery, p. 156. 



