MINUTE ANATOMY OF THE PAPILLiE OF THE FEOG’S TONGUE. 
457 
Description of the Plates. 
The figures represented in Plate XXI. illustrate the structure of the papillae of the 
frog’s tongue. In fig. 1 an entire fungiform papilla only in part finished is delineated. 
A portion of every tissue entering into its formation is however represented. The 
structure of this papilla is most interesting, because in a very small space we have 
epithelium, muscle, connective tissue, nerves of special sensation, motor nerves, distributed 
to the branching muscular fibres, and nerves distributed to the capillary vessels and con- 
nective tissue which are probably afferent. In the other figures the most important 
structures entering into the formation of the papilla are represented very highly 
magnified. Many of the preparations from which these drawings have been taken are 
in my possession, and can be examined by any one desirous of seeing them. The mode 
of preparation adopted is special, and has been referred to very generally in previous 
papers. It is described in detail in ‘ How to Work with the Microscope.’ Each 
figure is fully explained in the text beneath it, so that it is unnecessary to give a more 
minute description of the illustrations in this or the following Plate. 
