282 PRESIDENT OF GEOLOGICAL SOCIETY CHAP, ix 



for six months without ceasing over that passage at 

 the end of Jukes's memoir on the Irish rivers, in which 

 he discusses the valley of the Rhone above the Lake 

 of Geneva? It is admirable and true, and by'r lakins ! 

 he never saw the location ! Tell me not where is fancy 

 bred, but after my Frankland change of climate article 

 comes out, 1 if any other good sound argument occurs 

 to you that I have not used. Bauerman has drawn 

 a wheel so true that Best has to put a heavy weight 

 on it to keep it from running away ! ' 



BEAUMARIS, 30^ July 1864. 



MY DEAR GEIKIE I am as busy as man can be, 

 and am really getting fast on with that big Memoir, 

 which I trust will be for fifty years a text -book to 

 the Silurian geology of North Wales. I have read 

 Sir R.'s counterblast in proof [above referred to], and 

 I told him I must reply to it. How on earth can he pit 

 Dawson against Logan ? Does he remember also that 

 ' he always thought ' that Switzerland was another case 

 of water-drifting ? *For his protest and Lyell's I care 

 not a rush. Lyell for years scarcely believed Agassiz, 

 and used to have a special anti- Darwin chapter till 

 after the great book [Origin of Species] came out. He 

 is afraid of time now, and none of them know any- 

 thing about denudation and the true physical behaviour 

 of rock-masses. I lately had a very satisfactory letter 

 from Hooker on the subject. The worst of it is that 

 one can scarcely hope to convince them, or the old 

 geological world generally. You can't make a colour- 

 blind man see colours. None of them ever mapped a 

 country, as we have done, and disturbed countries to 



1 Dr. Frankland's paper on the Physical Cause of the Glacial Epoch ' will be 

 found in Phil. Mag. May 1864. 



