Andrews and Andrews. Roy. Soc. Proc, vol. 70, Plate 4. 



Fig. 1. 

 \ 



Microscopic Effects of Compression Stress on Platinum, showing Crystalline Slip, as seen 

 in Section. Magnification 120 diameters. Vertical illumination. Metal compressed 

 10 per cent. Arrow indicates direction of compressive force. 



Fig. 2. Fig. 3. 



Magnification 120 diameters. Magnification 250 diameters. 



Microscopic Effects of Compression Stress on Platinum, showing Crystalline Slip, as seen 

 in Section. Vertical illumination. Metal compressed 10 per cent. Arrow indicates 

 direction of compressive force. 



