Descriptive Bibliography xxvii 



tion, if what he calls the ' moral philosopher ' would 

 attain results of as firm and definite a character as 

 those which reward the ' natural philosopher.' " 



1893. Evolution and Ethics. 



Huxley's views on this subject are tersely stated in a 

 letter of March 23, 1894: "There are two very dif- 

 ferent questions which people fail to discriminate. 

 One is whether evolution accounts for morality, the 

 other whether the principle of evolution in general 

 can be adopted as an ethical principle. The first, of 

 course, I advocate, and have constantly insisted upon. 

 The second I deny, and reject all so-called evolutional 

 ethics based upon it." 



1893-1894. Collected Essays. 



These nine volumes contain all of Huxley's writings 

 that he cared to preserve, except the more technical 

 papers. 



1898-1903. The Scientific Memoirs of Thomas Henry Huxley. 

 These, the purely scientific works of Huxley, were 

 edited in five volumes by Michael Foster and E. 

 Ray Lankester. 



