20 HUXLEY 



approached from the northern capital, he had now 

 quite determined to remain in London, even on a 

 smaller income. 



His marriage to IVIiss Heathorn took place on 

 July 21, 1855, after a very anxious time owing to 

 the serious state of her health during the last year 

 in Australia and on her arrival in England. And 

 thus, after no less than eight years of trouble and 

 devotion, the great love and loyalty that character- 

 ised these two throughout their after lives trimnphed. 



The earlier part of Huxley's biological work had 

 been almost exclusively directed to the study of 

 the structure of invertebrates, and especially in the 

 direction of working out the relationships between 

 different species. Subsequently, in 1854, however, 

 he devoted more attention to jgalaeontology, and ad- 

 ministrative work in connection -with his various 

 appointments also demanded much of his attention. 

 As naturalist to the Greological Survey he had to 

 undertake the description of great numbers of fossils, 

 these descriptions being pubhshed in a series of 

 papers, thirty-eight in number, and extending over 

 a period of sixteen years. The knowledge thus gained 

 proved of inestimable value to him in the battle that 

 was shortly to rage round the pubhcation of the 

 Origin of Species. 



In 1855 he began his regular lectures to working- 

 men, which speedily attracted attention, and served 

 as a model ever afterwards for that kind of work. 

 Huxley's enthusiasm for these popular lectures was 

 immense. He wanted the working-men to understand 

 that Science and her ways are great facts for them, 

 " that physical virtue is the basis of all other, and 

 that they are to be clean and temperate and aU the 



