338 TEXT-BOOK OF GEOLOGY. [l888. 



forces of nature some of them surely were once more intense 

 than now. But that you know. 



The next generation of geologists may have something to say 

 about meteoric formations, and the consequence of the conflict of 

 the brickbats if they ever did collide. 



. . . You and Phillips have left the memories of pleasant 

 ways of act and thought, and I hope your successor will clothe 

 his outward being in your mantles. I am still working on: it 

 may be that I may be permitted to leave a record of work behind 

 me that may endure among the stars. 



I hope you and your wife are in the enjoyment of pleasant 

 rest: rest you have earned. Again sending you my hearty 

 thanks for these two noble books adornment and instruction 

 and full of old memories I am, yours gratefully, 



C. PRITCHARD. 



Pray assure your wife that we often think and speak of her 

 how kindly I need not say. C. P. 



The following acknowledgment of the second volume 

 of ' Geology,' from Professor H. Alleyne Nicholson, 1 is 

 expressed in the warmest terms : 



H. Alleyne Nicholson to J. Prestwich. 



UNIVERSITY, ABERDEEN, Feb. 23, 1888. 



DEAR PROFESSOR PRESTWICH, Pray accept my warmest thanks 

 for the present of Vol. II. of your admirable treatise on. Geology. 

 I shall value it on the one hand as a personal gift, and on the 

 other hand for its great intrinsic value. I have studied the first 

 volume of your great work with the utmost interest and profit. 

 I do not know of any treatise, in any language, in which there 

 is to be found such a masterly exposition of such vital geological 

 questions as internal temperature, vulcanicity, mountain-making, 

 and the like. I do not doubt that I shall derive at least equal 

 profit from the second volume. With renewed thanks and kind 

 regards, I am, yours very sincerely, 



H. ALLEYNE NICHOLSON. 



1 H. A. Nicholson, born Sept. 11, 1844 ; died Jan. 19, 1899. 



