On the Formation of Mould

accumulate adjoining agency appear beneath the turf black bodies buried burnt marl carefully castings character circumstance clay coarse earth communication composed conclusion considerable country course of fifteen covered decay deep described difference earth-worms eighty examined explained facts farmers feet finer followed form Formation of Mould four inches fragments of burnt grass gravelly grazing greater depth half an inch heap holes immediate inch thick known laid lately layer of lime length less little long remained lying manure marl and cinders mention mingled nature nearly November observed occurred old pasture land operation original particle of earth peaty soil performing ploughed field prejudice prepared previously probable process quantities Quartz Pebbles rain red colour remarkable roots sand scarcely scattered sink slow small spread spring square Staffordshire stones stratum sub-soil substances sufficiently superficial surface swallow three inches traced trivial twelve vegetable matter vegetable mould waste land Wedgwood whilst white whole worms