33 



NOTES AND COMMENTS, 



DR. H. C. SORBY, F.R.S. 



We were glad to see the following in a recent issue of 

 * Floreamus,' a Chronicle of the University of Sheffield : — ' We 

 must join all the friends of our most distinguished fellow-citizen 

 in congratulating him upon the signal honour paid him by the 

 Geological Society of London on the occasion of its centenary 

 meeting. Dr. Sorby was unfortunately too infirm to be present 

 at the meeting, but the following letter, addressed to him in 

 such terms by his brother geologists of all lands, afforded him, 

 as is natural, what may be called the crowning pleasure of 

 his life : — 



Geological Society, 



Burlington House, W., 



2jth September, igo~. 



To THE Father of Microscopical Petrography, 



' We, the undersigned, assembled to celebrate the 

 Centenary of the Geological Society of London, desire to unite 

 in expressing our profound conviction of the important service 

 rendered to the branch of Geological Science which they cultivate 

 by the pioneer labours ot Dr. Henry Clifton Sorby. They 

 deplore the circumstances which prevent him from joining 

 them on this interesting occasion, but beg to be allowed to 

 assure him of their great admiration of his life's work, of their 

 filial regard, and deep aff"ection. They rejoice to know that he 

 still finds consolation and happiness in his labours of love in 

 connection with the promotion of Scientific Research and 

 Education.' 



F. Zirkel. 

 Arch. Geikie. 

 W. J. Sollas. 

 W. C. Brogger. 

 Whitman Cross. 

 Frank J. Adams. 

 F. W. Rudler. 

 H. Arnold Bemrose. 

 A. Wichmann. 

 A. Lacroix. 



Henry A. Mvers. 



John S. Flett. 



John W. Judd. 



T. G. Bonney. 



F. Loewinson-Lessing-. 



Alfred Harker. 



T. McKenny Hughes. 



John W. Evans. 



Grenville A. J. Cole. 



Fredk. H. Hatch. 



J. W. Gregory. 

 George T. Prior. 

 Hans Reusch. 

 J. J. H. TealL 

 Chas. Barrois. 

 George F. Becker. 

 Jos. P. Iddings. 

 W. W. Watts. 

 C. V^lain. 



NEW METHODS OF GEOLOGICAL STUDY. 



The preceding reminds us that at a recent meeting of the 

 Geological Society of Tondon, a paper by Dr. Sorby was read, 

 which will do much to revolutionise the methods of geological 

 study. The paper was entitled ' On the Application of Quan- 

 titative methods to the study of the Structure and History of 

 Rocks.' In this, Dr. Sorby pointed out that the knowledge 



1908 February i. 



