LETTER TO PROFESSOR SEDGWICK. 387 



tion of the fish of the Old Red, with reference 

 to some intelligible scale. 



o 



(5.) Lastly, is there the shadow of ground 

 for supposing that by any natural generative 

 development the Ichthyosaurians and other 

 kindred forms of reptile have come from Sau- 

 roid, or any other type of fish? I believe 

 you will say, no. At any rate, the facts of 

 geology lend no support to such a view, for 

 the nobler forms of Reptile appear in strata 

 below those in which the Ichthyosaurians, etc., 

 are first seen. But I must not trouble you 

 with more questions. Professor Whewell is 

 now Master of Trinity College. We shall all 

 rejoice to see you. 



Ever, my dear Professor, your most faithful 

 and most grateful friend, 



A. SEDGWICK. 



FROM LOUIS AGASSIZ TO A. SEDGWICK. 



NEUCHATEL, June, 1845. 



... I reproach myself for not acknowledg- 

 ing at once your most interesting letter of 

 April 10th. But you will easily understand 

 that in the midst of the rush of work conse- 

 quent upon my preparation for a journey of 

 several years' duration I have not noticed the 

 flight of time since I received it, until to-day, 



