THE EQUIVALENTS OF THE HAND. 103 



that of taste,) in the long, slender extensile 

 tongue ; we have seen one of these animals 

 examine objects by means of the tongue, -whicli 

 was applied with a quivering motion to every 

 part of their surface. Perhaps, also, in the 

 long tongue of the sloth this sense may reside, 

 as well as that of taste. Let it be remem- 

 bered that even in man the tongue is an organ 

 of tact, often useful when the fingers fail : when 

 the finest hair gets by accident into the mouth, 

 our tongue can discover it. 



A glance at the limbs of the elephant, the 

 horse, the ox, the camel, or the deer, is 

 suflScient to assure us that in no part of them 

 the sense of touch resides. In these animals 

 the limbs, as we have already pointed out, are 

 mere instruments of support and locomotion, 

 and, from the structural arrangement of the 

 bones composing them, limited in their move- 

 ments, the shoulder enjoying no power of 

 rotation, the fore-arm no power of revolving. 

 The toes, (or, as in the horse, the toe,) hoof- 

 clad and rigid, are the fit terminations of such 

 limbs, the uses of which are thus limited. 



Let us first direct our attention to that pon- 

 derous beast the elephant. In this animal, the 

 limbs, like rough pillars, support a massive 



