MR CADELL ON EXPERIMENTAL RESEARCHES IN MOUNTAIN BUILDING. 349 



right, the waxcloth buckled up into an anticline a short distance from the end. While 

 the underlying clay bent round conformably with the pliable sole, the more brittle beds 

 above behaved exactly as in former experiments, and gave way along a slightly inclined 

 reversed fault, the right portion being thrust for some distance horizontally over the left. 









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Fig. 16. 



This experiment confirmed my theory, and clearly showed on what mechanical principles 

 it is possible for a horizontal thrust to bend down and pass into an ordinary fold below.- 







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Fig. 17. 



Fig. 17«. 



On continuing the push, the anticline was further compressed, and the pressure being 

 increasingly felt on the left limb of the fold, a second anticline (fig. 16) appeared on that 



