234 GEOLOGY [CHAP. IX 



Letter 567 Carboniferous strata could be contemporaneous. You seem 

 to me on the third point, viz., on non-advancement of organi- 

 sation, to have made a very strong case. I have not know- 

 ledge or presumption enough to criticise what you say. I 

 have said what I could at p. 363 of Origin. It seems to me 

 that the whole case may be looked at from several points 

 of view. I can add only one miserable little special case of 

 advancement in cirripedes. The suspicion crosses me that 

 if you endeavoured your best you would say more on the 

 other side. Do you know well Bronn in his last Entwickelung 1 

 (or some such word) on this subject ? it seemed to me very 

 well done. I hope before you publish again you will read 

 him again, to consider the case as if you were a judge in a 

 court of appeal ; it is a very important subject. I can say 

 nothing against your side, but I have an (< inner consciousness " 

 (a highly philosophical style of arguing !) that something could 

 be said against you ; for I cannot help hoping that you are 

 not quite as right as you seem to be. Finally, I cannot tell 

 why, but when I finished your Address I felt convinced that 

 many would infer that you were dead against change of 

 species, but I clearly saw that you were not. I am not very 

 well, so good-night, and excuse this horrid letter. 



Letter 568 To J- D . Hooker. 



Down, June 3Oth [1866]. 



I have heard from Sulivan (who, poor fellow, gives a 

 very bad account of his own health) about the fossils. 2 . . . 

 The place is Gal legos, on the S. coast of Patagonia. 

 Sulivan says that in the course of two or three days all 

 the boats in the ship could be filled twice over ; but to 

 get good specimens out of the hardish rock two or three 



1 Probably " Untersuchungen iiber die Entwickelungsgeselze der 

 organischen Welt wahrend der Bildungszeit unserer Erdoberflache," 

 Stuttgart, 1858. Translated by W. S. Dallas in the Ann. and Mag. 

 Nat. Hist., Vol. IV., p. 81. 



2 In a letter to Huxley (June 4th, 1866) Darwin wrote: "Admiral 

 Sulivan several years ago discovered an astonishingly rich accumulation 

 of fossil bones not far from the Straits [of Magellan]. . . . During many 

 years it has seemed to me extremely desirable that these should be 

 collected ; and here is an excellent opportunity." 



