94 PROCEEDINGS COTTESWOLD CLUB 1903 
converted into crystalline dolomite. The same remark 
applies to the Carboniferous Limestone at Symond’s Yat. 
The process by which limestone becomes dolomite is 
imperfectly understood, and it is difficult to account for 
the magnesia. I see no reason why dolomite should not 
have originated in more ways than one, but at present I 
have an open mind on the subject. 
In this address I have dealt only with the Palzozoic 
rocks, but a study of the Mesozoic and Czenozoic strata 
would show that, except in matters of mere detail, 
the stratified rocks have been deposited by a repeti- 
tion of the same processes from the earliest times of © 
which we have knowledge, this extending over a time so 
vast that it can only vaguely be estimated. 
I regret that owing to the limited time available for this 
address at the Annual Meeting, I am only able to give an 
abstract of what was intended. 
For certain portions of the first part of the address, 
relating to the Field Meetings, I am indebted to the Hon. 
Assistant Secretary, Mr L. Richardson, F.G.S., to whom I 
desire to express my thanks. 
