In an excursion of Professor Geikie's class to North Berwick (5th February), a layer of titaniferous iron sand was found lying along the shore for a short distance.

The rocks at this locality consist chiefly of dull green and red trap-tuffs, traversed by dykes and veins of basalt. Immediately in front of the spot where the iron sand was met with several intrusive masses of dark heavy basalt occur. It was evidently from the decomposition and trituration of this rock that the iron sand came, which has been assorted by the waves along the upper margin of the beach.