PLATE IV. 



EPITHELIAL CELLS JROM MOUTH. GERMINAL OR LIVING MATTER, RED; 

 .FORMED MATERIAL, BLACK. SHOWING CHANGES DURING GROWTH. 



h rough thick layer of epithelium covering the papillae of the tongue. sho\viu^ 



the germ i te formed material ot each elementary unit or e^ll In the lower 



part of tb ' Inch ara closest to the nutrient matter are seen. Here there are no 



trepARATF CKIT.S, but the soft formed material forma a continuous mass. 'C'hese ;t: 

 c-!ls, ;ind are irmltipl \ in '; in number When the formed material i '-mid the 



urm:n;i'. ! : 1:1011 ceaHes. As the cells :IM 



the surface, c, to take the pla moved, the formed material becomes firna aud dry, and 



the remains of the germinal matter die. Magnified 700 diameters. 



of an me!; 



