NOTE. 



DARWIN revealed himself so largely in his books, 

 that a vivid picture of much of his life can be ex- 

 tracted from them. Thus it has been found possible to 

 combine much biographical interest with sketches of his 

 most important works. Like other biographers of Darwin, 

 I am much indebted to Mr. Woodall's valuable memoir, 

 contributed to the Transactions of the Shropshire Archaeo- 

 logical Society. But original authorities have been con- 

 sulted throughout, and the first editions of Darwin's 

 books quoted, unless the contrary is explicitly stated. I 

 am greatly obliged to Messrs. F. Darwin and G. J. 

 Romanes for kindly permitting me to quote from Mr. 

 Darwin's letters to Mr. Romanes. I must also express 

 my thanks to my friends, Mr. Romanes and Prof. D'Arcy 

 W. Thompson, for doing me the great service of looking 

 over the proof-sheets of this book. 



