 | Andrew Findlater - 1881 - 184 pagina’s
...worm-castings. Mr Darwin calculates that ' in many parts of England a weight of more than ten tons of dry earth annually passes through their bodies, and is brought to the surface on each acre of land (forming a layer one-fifth of an inch in thickness) j so that the whole superficial... | |
 | Charles Darwin - 1882 - 354 pagina’s
...(10,516 kilogramme^ of dry earth annually passes through their bodies and is hrought to the surface on each acre of land; so that the whole superficial bed of vegetable mould passes through the:: bodies in the course of every few year?. From the collapsing of the old burrows il.mould is in... | |
 | 1882 - 954 pagina’s
...acre in corn-fields and pasture-lands ; and as in many parts of England a weight of more than ton tons of dry earth annually passes through their bodies and is brought to the surface on each aero, the whole superficial bed of North. ft». *.— A NORTH AHD SOUTH SECTION THROUGH тня... | |
 | Charles Darwin - 1882 - 358 pagina’s
...great muscular power. In many parts of England a weight of more than ten tons (10,516 kilogrammes) of dry earth annually passes through their bodies and is brought to the surface on each acre of land; so that the whole superficial bed of vegetable mould passes through their bodies... | |
 | 1882 - 904 pagina’s
...acre in corn-fields and pasture-lands ; and as in many parts of England a weight of more than ten tons of dry earth annually passes through their bodies and is brought to the surface on each acre, the whole superficial bed of vegetable mold must pass through them every few years. By... | |
 | 1882 - 1216 pagina’s
...stones left on the surface. In many parts of England it is estimated that a weight of more than ten tons of dry earth annually passes through their bodies and is brought to the surface on each acre of land ; so that the whole superficial bed ol vegetable mold passes through their bodies... | |
 | 1882 - 1162 pagina’s
...more than ten tons of dry earth annually passes through their bodies and is brought to the surface on each acre of land; so that the whole superficial bed of vegetable mold passes through their bodies in the course of every few years. Moreover they triturate and thus... | |
 | Charles Darwin - 1883 - 362 pagina’s
...great muscular power. In many parts of England a weight of more than ten tons (10,516 kilogrammes) of dry earth annually passes through their bodies and is brought to the surface on each acre of land; so that the whole superficial bed of vegetable mould passes through their bodies... | |
 | John Burroughs - 1884 - 314 pagina’s
...above them. On each acre of land, be says, "in many parts of England, a weight of more than ten tons of dry earth annually passes through their bodies and is brought to the surface." "When we behold a wide, turf-covered expanse," he further observes, " we should remember that its smoothness,... | |
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In many parts of England a weight of more than ten tons of dry earth annually passes through their bodies and is brought to the surface on each acre of land... 
