TO 



Prof. T. H. HUXLEY, LL.D., F.R.S., F.L.S., F.Z.S. 



Correspondant de I'lnstitut de France . 

 Past-President of the Royal Society, etc. etc. 



WHO HAS CREATED A NEW EPOCH IN BIOLOGY ; AND WHOSE 



GENIUS HAS DONE SO MUCH TO AWAKEN THE KEENEST 



INTEREST IN THE STUDY AND POPULARISATION 



OF SCIENCE 



ITbie "Mori? is (bs permission) DeOicatcD 



AS 



A TOKEN OF ADMIRATION AND RESPECT 



BY 



THE AUTHOR 



