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Dec 29 71 Had a trench dug in field near House in middle which has probably been laid down as pasture a century — Here fine earth without stones varied much in thickness with atoms of bricks or tiles red & pebbles at bottom in same trench, measured from surface in parts only 6 1/2 in or part 8 1/2; so not thicker than in other field — 7 miles wd be faintest average — If worms threw up in one spot then in another near by, Many lurking process wd begin.

Though I found a worm hole & live worms at depth of 26 inches, yet very few castings in the immediate vicinity. — Many fields evidently poor. Many near to cherry trees & in certain other spot — Even on lawn. Smooth holes of castings, but very few under yews or under Limes.