724 PROCEEDINGS OF THE SOCIETY. 



might bo changed into crystalline rock like mica schist, and that 

 the process had been, and indeed was still, going on with exceeding 

 slowness. The rock sections with which the demonstration was illus- 

 trated were shown upon the screen with great brilliancy and sharpness, 

 although very highly magnified, by means of Messrs. Zeiss' " Epidia- 

 scope." 



The President said that after the applause which followed the con- 

 clusion of Prof. Bonney's remarks, it was hardly necessary to assure the 

 author of their appreciation and their thanks. Nothing could have 

 been more delightful than to see such a beautiful series of slides, and to 

 have them explained so intelligibly. It must certainly lead those who 

 had been present to think and observe for themselves, and desire to 

 know more about the microscopic structure of rocks. They had been 

 shown how those who were able to prepare and study rock sections for 

 themselves could, by this means, trace the changes which had taken 

 place from the effect of greater and greater pressure, heat, and con- 

 tortion. He did not know anything more likely to impress them than 

 what they had seen and heard that evening, and they desired to express- 

 their indebtedness to Prof. Bonney for the able manner in which he had 

 explained tho meaning of these very beautiful slides. 



A hearty vote of thanks to Prof. Bonney was unanimously passed. 





The following Objects, Instruments, &c, were exhibited :— 



The Society : — An Old Microscope mado by Cary, fitted with 

 Varley and Sons' Stage. An Old Microscope, made by Dr. Geo. Jackson, 

 seventh President of the Society. 



Dr. E. G. Hebb:— A German " Class" Microscope, lent by Messrs. 

 Elliott Bros. 



Prof. Rev. Canon T. G. Bonney : — Slides of Rock Sections projected 

 ou the screen, illustrating his Demonstration. 



New Fellow. — The following was elected an Ordinary Fellow 

 Mr. Josiah Beddow. 



MEETING 



Held on the 19th of November, 1902, at 20 Hanovek Square, W„ 

 Dr. Henry Woodward, F.R S., President, in the Chair. 



The Minutes of the Meeting of the 15th of October, 1902, were read 

 and confirmed, and were signed by the President. 



The List of Donations to the Society (exclusive of exchanges and 

 reprints), received since the last Meeting, was read, and the thanks of 

 the Society were voted to the donors. 



