338 NATURAL THEOLOGY. 



the cochlea it may touch fibres of the lamina spi- 

 ralis of diiferent lengths. All we mean to affirm 

 is, that there is so great an extent and variety in 

 the distribution of the acoustic nerve, and also in 

 the canals and cavities, as fairly to give us reason 

 for believing them to be the sources of that exten- 

 sive scale, and of all the changes and combinations 

 of sound which we enjoy through this sense. 



