Subject ASC0003wad
The geologist : a popular monthly magazine of geology.
Vol.5 (1862), Page 137 (1862)
Natural History Museum Library, London
BHL Page 46207585
Keywords
dry clay bed Limnaeus boat fly fly water insect furrow tunnel convex roof hole shell track eggs water insects geology boat flies pond clay bed Kent boat-flies water-insect A piece of the dried clay bed of a pond in Kent