THE LAW OF EVOLUTION CONTINUED. 369 



pany with the voice, and the variations of strength with 

 which they are sounded and sung, but in respect of the 

 changes of key, the changes of time, the changes of timbre 

 of the voice, and the many other modifications of expression. 

 While between the old monotonous dance-chant and a 

 grand opera of our own day, with its endless orchestral com- 

 plexities and vocal combinations, the contrast in hetero- 

 geneity is so extreme that it seems scarcely credible that the 

 one should have been the ancestor of the other. 



126. Were they needed, many further illustrations 

 might be cited. Going back to the early time when the 

 deeds of the god-king, chanted and mimetically represented 

 in dances round his altar, were further narrated in picture 

 writings on the walls of temples and palaces, and so consti- 

 tuted a rude literature, we might trace the development of 

 Literature through phases in which, as in the Hebrew Scrip- 

 tures, it presents in one work, theology, cosmogony, history, 

 biography, civil law, ethics, poetry; through other phases in 

 which, as in the Iliad, the religious, martial, historical, the 

 epic, dramatic, and lyric elements are similarly commin- 

 gled; down to its present heterogeneous development, in 

 which its divisions and subdivisions are so numerous and 

 varied as to defy complete classification. Or we might track 

 the evolution of Science: beginning with the era in which 

 it was not yet differentiated from Art, and was, in union 

 with Art, the handmaid of Religion; passing through the 

 era in which the sciences were so few and rudimentary, as to 

 be simultaneously cultivated by the same philosophers ; and 

 ending with the era in which the genera and species are so 

 numerous that few can enumerate them, and no one can 

 adequately grasp even one genus. Or we might do the like 

 with Architecture, with the Drama, with Dress. But 

 doubtless the reader is already weary of illustrations; and 

 my promise has been amply fulfilled. I believe it has been 

 shown beyond question, that that which the German physi- 



