OUTLINES OF COSMIC PHILOSOPHY, BASED ON THE DOCTRINE OF EVOLUTION, WITH CRITICISMS ON THE POSITIVE PHILOSOPHY. In Two Volumes (Complete). By John Fiske, Published by Houghton, Mifflin and Co., Boston, 1874.
 
Volume I & Volume II (Two Volume set)
 
"Fiske's main philosophical work, Outlines of Cosmic Philosophy, developed from lectures given at Harvard in 1869 and 1871, and was completed in London during 1873 and 1874. In it he acknowledged himself a disciple and expositor of the philosophy of Herbert Spencer, the importance of which, he believed, would in time be seen to surpass that of Isaac Newton." 
 
Navy blue with gilt spine title & gilt top edge. Nice two volume set with mild wear. 465 and 523 pages.  Scarce two volume set!