Diatoms in the London Clay

Abstract

SINCE you were good enough to allow me to announce in NATURE, the discovery of diatoms in the London clay, I have been able to trace the band in which they occur throughout the whole extent of the London clay in East Kent—and at one spot in Mid-Kent. In continuing the inquiry, with vol. iv. of the Memoirs of the Geological Survey for my guide, I have found that sections that were visible when that valuable work was published are now overgrown or have been removed. Under these circumstances will you allow me to ask your readers for information as to places where tolerably fresh sections of the lower part of the London clay can be seen, especially at or near the northern and the western outcrop of the formation?