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XXIV. On the Veins that occur in th€ 

 Newest Flcetz-trap Formation of East Lo- 

 thian *. 



By Dr Qgilby* 



[kead \Qth November 1808.] 



In a former essay, which I had the honour of 

 presenting to this Society, on the geognosy of East 

 Lothian, I gave a general view of three of the uni- 

 versal formations of minerals which occur in, and 

 form the basis of that county : these are rocks of 



Mr 



* The first part of this valuable paper, which treats o£ 

 the rocks of the newest trap formation of East Lothian, 

 was returned to the author for revision, but has not again 

 been transmitted to the Society. It will probably ap- 

 pear in the second volume of the Society's Transactions* 



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