PHYSICAL GEOLOaT. 171 



Wing, A. T. On spontaneous fractures and movements of rock in a 



quarry at Monson, Massachusetts. Proc. Boston Nat. -Hist. Soc. 



xvi. pt. 1, pp. 41, 42. See also Niles, p. 167. 



On quarrying away portions of the rock other parts became upheaved, 



sometimes Avith violence and noise. One of these breaks moved 10,000 



tons southward for three quarters of an inch. The deeper we go in 



the rock the greater the amount of expansive movement. E. B. T. 



See also the following : — 

 Gaspakd, a. Oscillations of Dunkirk Coast : p. 65. 

 GoRCEix. Yolcanic Phenomena, Nisyros : p. 66. 

 Gead, C. Emersion and Upheaval, N". Polar Regions : p. 108. 

 HowoRTH, H. H. Changes in S. Circumpolar Region : p. 152. 

 JoHNSTRTTP, F. Dislocation and Upheaval, Moens Klint : p. 74. 

 Lory, C. Fan-shaped structure of the Alps : p. 80, 

 Nathorst, a. G. Changes of level, Scania : p. 85. 

 YoisiN, H. Boring at Sperenberg (temperatures) : p. lOo. 



