THE ORGANS OF TASTK. 



381 



transparent protoplasm. These cells form the outermost part of the 

 epithelium, covering the end of the papilla ; all the cells belonging 

 to the same papilla are of the same size. In consequence of the 

 mutual pressure which they exert on each other they present, in 

 transverse section, six-sided outlines (Fig. 237, 2). The nuclei of 

 adjacent cells are placed at almost exactly the same level. By the 



Fig- -'37- 



I. Various pairs from tl e fangiforui papillae ; 

 after Engelmann. 



1. Nerves of a fungiform papilla. Magnified 450 



tiroes. 



2. Surface view of the epithelium, after five 



minutes' action of iolized serum. Magnified 

 600 times. 



3. Goblet-cell with adjacent forked cell. Magni- 



fied 450 times. 



4. Portion of the papilla, after removal of the 



goblet- and forked cells ; only cylindrical 

 cells remaining. Magnified 400 times. 



5. Goblet-cell, with swollen contents. Magni- 

 fied 450 times. 



6-13. Various forms of isolated forked cells. 

 Magnified 450 times. 



II. Sections of two glands of the tongue ; 

 after Biedennan. 



1. Rest ing-gland. 



2. Gland after stimulation. 



action of reagents on these cells very remarkable forms are obtained, 

 in consequence of the protoplasm swelling and being forced up- 

 wards (Fig. 237, 5). 



(2) The cylindrical cells (Fig. 237 I) have rounded free extre- 

 mities, which reach to the general surface of the epithelium ; the 

 remainder of the cell is cylindrical except towards its lower ex- 



