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Dec 27 71. Had the chalk trench enlarged & found several pebbles of chalk larger & smaller — One embedded (with flint true pebble above it) At barely 9 inches from surface of turf. — But in this new trench there is some appearance of broken line 6 inches from surface; can there be where chief roots of grass end.

If the above chalk pebbles are mine 1842. Then, the field cd only lately have been laid down, for abundant angular stones, mixed with much earth lie close beneath —

N. B. In ground [poached] by animals the fragment of chalk wd fall into hollow & when

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heavy roller passed over field & would be driven in.-

The big fragments would be pushed deepest in, & the present pebble was rather large.-

Disolution of chalk-fragments on lower surface wd these to sink?