PREFACE 



An attempt has been made in this short biography to 

 bring into prominence Huxley's scientific work, though 

 much of it was of so specialized a nature as to make 

 a full presentment to other than professed zoologists 

 practically impossible. It has been necessary to incur a 

 large debt to Mr. Leonard Huxley's admirable Life and 

 Letters of Thomas Henry Huxley, the chief source of 

 information, and this is gratefully acknowledged. 

 Reference has been made to the first edition, in two 

 volumes (1900), the abbreviation "Life" being em- 

 ployed. In dealing with the published works, the 

 Memorial Edition of the Scientific Memoirs (Sci. Mem.) 

 and the nine volumes of Collected Essays (Coll. Essays) 

 have been used wherever possible, as being most 

 convenient. 



J. R. AINSWORTH DAVIS. 



Aberystwyth, December 1906. 



