78 Prof. Tyndall, 071 the Veined Structure of Glaciers. [March 4, 



The side a b was purposely left longest in order to throw the pressure 

 upon that side. The mass was squeezed between the slabs of wood 



S and S', and the result was that shown in fig. 2 ; the side a b, which 

 had borne the pressure became liquefied in flats, as shown in the figure. 



FIG. 3. 



Fig. 3 is a section of the portion of the Grindelwald glacier already 

 referred to : at the point A the glacier changes its inclination, and 

 pressure comes into play ; at this point the veins begin to be found, 

 and in a very short distance reach perfection. A comparison of both 

 diagrams at once suggests their relationship, 



[J. T.] 



