Vol. 62.] RECUMBENT FOLDS PRODUCED AS A RESULT OF FLOW. 721 



times by tectonic disjunctions. He thought that this experiment 

 also gave a good illustration of the structure en chapelet of 

 the Alpine geologists ; that was, the tendency of the beds of lime- 

 stone to parcel out into a series of broken segments separated each 

 from the other, recalling on a large scale the dislocated belemnites 

 figured by Prof. Albert Heim in his ' Mechanism of Mountain- 

 building/ 



It seemed scarcely necessary to add that plastic movements of 

 such magnitude are only possible at a great depth, and have taken 

 place under a thick covering of Tertiary strata ; and perhaps even 

 beneath the background (riickland of Prof. Suess) of the Dinarides 

 thrust over the Alpine zone. These external layers have since been 

 swept away by erosion. 



The Author thanked the Fellows for their considerate attention ; 

 he was of opinion that some of the folds described by Prof. Lugeon 

 had passed over Mont Blanc. 



