Geology of Isle of Man. 



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charge permits them to be tested with mallein. The entry of 

 sheep and goats may also be prohibited unless they have been 

 dipped in such manner as may be prescribed. 



Geology of the Isle of Man. 



One of the most recently published Memoirs of the Geological 

 Survey of the United Kingdom deals with the Geology of 

 the Isle of Man, price 12s. 



The Isle of Man is one of the few remaining portions of 

 the kingdom which have not previously been brought under 

 the operations of the Geological Survey in any form. The 

 present Memoir is the outcome of the survey of the island 

 by Mr. G. W. Lamplugh, F.G.S., and is a very full explanation 

 of the geological maps of the island, which are issued in two 

 editions, with and without drift. Besides the chapters of 

 topographical details regarding the rocks of the island, which 

 are arranged to serve as a geological guide book to those 

 in search of local information, the work contains general 

 chapters in which a broader method of treatment is adopted 

 and prominence is given to the phenomena of more than 

 local interest. Thus, the descriptions of the physical features 

 of the island, of the "crush-conglomerate" and other curious 

 rock-structures and types of folding produced by earth- 

 movement in the Manx slates, of the disturbances of a 

 different character exhibited by the carboniferous rocks, of 

 the structure of the Irish Sea basin as revealed by deep borings 

 in the north of the island, and of the condition of the island 

 during the successive stages of the glacial period ; all contain 

 matter of wide geological interest. The chapters on the 

 petrography of the great variety of igneous rocks, and of 

 the sedimentary rocks of the island, have been prepared by 

 Prof. W. W. Watts, F.G.S. 



Under the heading of Economic Geology, there is a general 

 account of the metalliferous veins in the island, and a careful 

 description of the numerous mine-workings and trials that 

 have been carried out in exploiting or testing these veins. 

 The book is illustrated by numerous plates, figures and sections. 



