...soil of the county must pass and repass through their bodies every few years. " The plough," he says, "is one of the most ancient and most valuable of man's inventions; hut long before he existed the land was, in fact, regularly ploughed by earth-worms. It may be doubted...

...soil of the county must pass and repass through their bodies every few years. " The plough," he says, "is one of the most ancient and most valuable of man's...existed the land was, in fact, regularly ploughed by earth-worms. It may be doubted whether there are many other animals which have played as important...

...such expanse has passed, and will again pass, every few years through the bodies of worms. The plow is one of the most ancient and most valuable of man's inventions ; but long before it existed the land was, in fact, regularly plowed by earth-worms." Surely, in view of such revelations...

...such expanse has passed, and will again pass, every few years, through the bodies of worms. The plow is one of the most ancient and most valuable of man's...before he existed the land was, in fact, regularly plowed by earth-worms. It may be doubted whether there are many other animals which have played so...

...superficial mould over any such expanse has passed and will again pass every few years through the bodies of worms. The plough is one of the most ancient...ploughed, and still continues to be thus ploughed, and by earth worms. It may be doubted whether there are many other animals which have played so important...

...over any such expanse has passed, and will again pass every few years, through the bodies of the worm. The plough is one of the most ancient and most valuable...still continues to be thus ploughed, by earth-worms." In many parts of England, Mr. Darwin estimates that more than ten tons of dry earth annually passes...

...superficial mould over any such expanse has passed, and will again pass, every few years, through the bodies of worms. The plough is one of the most ancient...inventions ; but long before he existed, the land wa£ in fact regularly ploughed, and still continues to be thus ploughed by earth worms. It may be...

...Worms." Darwin has shown beyond all dispute, as the result of his incomparable researches, that though " the plough is one of the most ancient and most valuable of man's inventions, long before he existed the land was in fact regularly ploughed, and still continues to be ploughed,...

...recently been enabled to convince us, that, long before the invention of the plough, or even before man existed, "the land was, in fact, regularly ploughed, and still continues to be ploughed, by earth-worms." It is truly said that these facts adduced by Mr. Darwin convey a striking...

...superficial mould over any such expanse has passed, and will again pass, every few years through the bodies of worms. The plough is one of the most ancient...ploughed, and still continues to be thus ploughed * Dr. Darwin's mother was a daughter of Josiah Wedgwood, the celebrated ? iunder of the modern pottery...