22 GROWTH OF THE 'ORIGIN.' [l843- 



point to find out, whether there are many European genera 

 in T. del Fuego which are not found along the ridge of the 

 Cordillera; the separation in such case would be so enor- 

 mous. Do point out in any sketch you draw up, what 

 genera are American and what European, and how great 

 the differences of the species are, when the genera are 

 European, for the sake of the ignoramuses. 



I hope Henslow will send you my Galapagos plants (about 

 which Humboldt even expressed to me considerable curiosity) 

 I took much pains in collecting all I could. A Flora of this 

 archipelago would, I suspect, offer a nearly parallel case to 

 that of St. Helena, which has so long excited interest. 

 Pray excuse this long rambling note, and believe me, my 



dear sir, yours very sincerely, 



C. Darwin. 



Will you be so good as to present my respectful com- 

 pliments to Sir W. Hooker. 



[Referring to Sir J. D. Hooker's work on the Galapagos 

 Flora, my father wrote in 1846 : 



" I cannot tell you how delighted and astonished I am at 

 the results of your examination ; how wonderfully they 

 support my assertion on the differences in the animals of the 

 different islands, about which I have always been fearful." 



Again he wrote (1849) : 



" I received a few weeks ago your Galapagos papers,* and 

 I have read them since being here. I really cannot express 

 too strongly my admiration of the geographical discussion : 

 to my judgment it is a perfect model of what such a paper 

 should be ; it took me four days to read and think over. 

 How interesting the Flora of the Sandwich Islands appears 

 to be, how I wish there were materials for you to treat its 



* These papers include the re- and were published by the Linnean 

 suits of Sir J. D. Hooker's examina- Society in 1849. 

 tion of my father's Galapagos plants, 



