[Footnote 122:  Mauritius:  an island in the Indian Ocean; Huxley visited the island when on the voyage with the Rattlesnake.  He wrote to his mother of his visit:  “This island is, you know, the scene of Saint Pierre’s beautiful story of Paul and Virginia, over which I suppose most people have sentimentalized at one time or another of their lives.  Until we reached here I did not know that the tale was like the lady’s improver—­a fiction founded on fact, and that Paul and Virginia were at one time flesh and blood, and that their veritable dust was buried at Pamplemousses in a spot considered as one of the lions of the place, and visited as classic ground.”]

[Footnote 123:  Mr. Darwin’s coral reefs:  The Structure and Distribution of Coral Reefs, published in 1848.]

[Footnote 124:  Professor Jukes (1811-1869):  an English geologist.]

[Footnote 125:  Mr. Dana (1813-1895):  a well-known American geologist and mineralogist; a professor at Yale from 1845.  He wrote a number of books among which is Coral and Coral Reefs.]

[Footnote 126:  Jurassic period:  that part of the geological series which is older than the Cretaceous and newer than the Triassic; so called from the predominance of rocks of this age in the Jura Mountains.  The three great divisions of fossiliferous rocks are called the Triassic, the Jurassic, and the Cretaceous.]

REFERENCE BOOKS

The following reference books are suggested for a more complete treatment of various points in the text:—­Andrews’ History of England.  Green’s Short History of the English People.  Traill’s Social England.  Roger’s A Student’s History of Philosophy.  Royce’s The Spirit of Modern Philosophy.  Huxley’s Life and Letters.  Smalley’s Mr. Huxley, in Scribner’s Magazine for October, 1905.  Darwin’s Life and Letters.