6 THE GUSTATORY ORGANS, BY TH. W. LNGELMANN. 



millimeters. In the Hare it is somewhat larger. Fig. 271 shows the 

 appearances presented by a vertical section carried at right angles to 

 the direction of the furrows through the middle of the organ. Here 

 four gustatory lamellae are seen in complete section, and two in half- 

 section. They are separated from one another by deep grooves, 

 at the bottom of which an acinous gland here and there opens. 

 These folds present a body composed of connective tissue, dividing 

 into three secondary folds, of which the centre one is broader than 

 the two lateral. The connective-tissue matrix is invested by 

 laminated pavement epithelium, which completely occupies the groove 



Fig. 272. 



Fig. 272. Upper half of the epithelial framework of the gustatory 

 bulbs. Four cavities, from which the bulbs have fallen out, are here 

 seen from the side of the mucous membrane. In the centre of the 

 bottom of each is the gustatory pore. The specimen was taken from 

 the lateral gustatory organ of the Rabbit. Magnified 450 diameters. 



between the secondary folds, and is much thicker on their free 

 surface than laterally, where they form the boundaries of the grooves. 

 The gustatory bulbs are placed laterally along the whole length of 

 each lamella. They there form a broad stria, which extends down- 

 wards to about the middle cf the depth of each furrow, and upwards 

 to near the opening of the furrow. The gustatory bulbs are so 

 closely arranged (figs. 271 and 272) as to be in absolute contact. In 

 the Rabbit they usually stand in four tiers or ranks, one above 

 another. Each tier may contain in its whole length about eighty bulbs. 

 Each gustatory fold may perhaps be approximately held to contain 



