8 THE GUSTATORY ORGANS, BY TH. W. ENGELMANN. 



inferior surface is not very sharply defined from the stratum 

 Malpighii. The margin of the gustatory pore is generally 

 formed by the apposition of several cells, but sometimes by a 

 single cell, which then appears as if it were perforated by a 

 round hole. The border of the hole often presents an annular 

 thickening (fig. 272). 



Figs. 269, 272, and 273 may serve to further elucidate this de- 

 scription ; all three figures being taken from the gustatory lamellae 

 of the Rabbit. Fig. 269 shows a section carried perpendicularly 

 through the thickness of the gustatory epithelium. The gustatory 

 bulbs are seen occupying the flask-shaped spaces. Fig. 272 exhibits 

 the upper half of the epithelial framework which surrounds the space 

 for the gustatory bulbs, as seen from below. This half of the 



Fig. 274. 



Fig. 274. Isolated gustatory bulb, from the lateral gustatory organ 

 of the Rabbit. Magnified 600 diameters. 



epithelium has raised itself as a continuous lamina from the sub- 

 jacent layer in the course of the preparation of the specimen. The 

 gustatory bulbs remain with this last seated upon the mucous 

 membrane. The figure gives the appearances presented to the 

 observer as seen on looking into the open and empty spaces from 

 below ; at the bottom of each may be seen the sharply defined gustator}'' 

 pore, surrounded by a thickened ring. Fig. 273 completes fig. 272. 

 It represents a gustatory bulb still attached to the mucous membrane, 

 with the surrounding inferior half of the epithelial framework, as seen 

 from above. 



The gustatory bulbs, or taste cups (Geschmacksknospen 

 oder Schmeckbecher), (fig. 274,) which occupy the above- 



