GUSTATOKY ORGANS OF AMPHIBIA. 



17 



pressure. The body of these cells is from 0'02 to O024 of a 

 millimeter in length, and O'Ol broad, with a vesicular nucleus 

 in its lower third. Below the nucleus the cell bodies become 

 attenuated, to form an irregularly shaped protoplasmic pro- 

 cess. The cell body is enclosed by a firm membrane, having a 

 wide opening above, like that of a goblet. This goblet is filled 

 to the brim with quite homogeneous transparent protoplasm. 

 Below, the membrane, gradually becoming thinner, and ulti- 



Fig. 277. 



Fig. 277. Termination of the gustatory nerves of the Frog. Rami- 

 fication of a nerve fibre in the nerve cushion, from a specimen pre- 

 pared in glycerine. Group' of two goblet-cells, one columnar and two 

 forked cells, from a specimen prepared in chromic acid and glycerine. 

 Magnified 600 diameters. 



mately no longer demonstrable, is continued upon the process 

 that likewise consists of perfectly homogeneous protoplasm. 

 The processes of adjoining goblet-cells form by their juxta- 

 position, and perhaps also by their fusion, a plexus of proto- 

 plasmic substance in the deeper layer of the epithelium. 



The goblet-cells were described by Key as modified epithelial cells. 

 They are usually of uniform size. By the action of numerous reagents, 

 as, for example, long maceration in iodine-serum, the protoplasm some- 

 times escapes from the cells, whilst the nucleus remains at the bottom, 



VOL. III. C 



