No. I.] OBSERVATIONS ON THE GUSTATORY ORGANS. 83 



in diameter and 1.40 mm. in height. Serous glands occur 

 within the papillae as well as beneath them, but are not abun- 

 dant. Bulbs occur at all parts of the lateral area, and a few 

 isolated ones are present on the upper surface. The number 

 of tiers varies from fifteen to twenty, and there are about 

 ninety bulbs in a tier. They measure 0.060 mm. in length and 

 0.030 mm. in breadth. 



The Lateral Gustatory Organs. — These organs are about 

 1 1 mm. in length. The folds vary greatly in size and general 

 appearance, and several of the furrows are incomplete. Serous 

 glands and ducts are not abundant. Only four or five of the 

 folds bear bulbs. There may be twenty tiers, but usually the 

 number is less. The bulbs vary much in size, one with a very 

 long neck measuring 0.090 mm. in length and 0.045 "^m. in 

 breadth. The mean dimensions are probably the same as for 

 those of the circumvallate papillae. 



Bulbs were fairly plentiful in the fungiform papillae. They 

 are of good size, and measure 0.057 iriiri- i^ length and 0.026 

 mm. in breadth. 



The Tongue of Ursjis malayamis. 



General Description. — The organ measures 137 mm. in 

 length, 35 mm. in breadth, and is free from the fraenum for 42 

 mm. The under surface is smooth, and impressed by a faint 

 median groove extending from the fraenum to the tip. The tip 

 is thin, flat, and expanded. The upper surface is marked ante- 

 riorly by a mesial raphe. Papillae of the fungiform type are 

 abundant, and quite evenly distributed over the dorsum. The 

 extreme posterior dorsal surface bears the usual fleshy elevations. 

 The circumvallate papillae are arranged in a crescent, the con- 

 vexity of which is turned towards the epiglottis. The lateral 

 gustatory organs lie on either side of the tongue, close to the 

 base. 



GUSTATORY STRUCTURES. 



TJie Circumvallate PapillcB. — The papillae vary much in size 

 and shape, and some of them are lobate. They measure on the 

 average i.iomm. in diameter and 0.80 mm. in height. Their 

 summits are flattened, and project a trifle from the opening 

 of the trench. The sides are at first vertical, and then curve 



