. Elementary lessons in the physics of agriculture. Agricultural physics. [from old catalog]. 1 â 1 m o o ^' .^ m Of Mm Fiij. 35. Section reduced to half natural scale, of the vegetable mould in a field drained anfl reclaimed 15 years before. Showing turf, vegetable mould without stones, mould with fragments of burnt marl, coal cinders and quartz pebbles. After Darwin. rapid and are due to different causes. Earth-woisms, ants, crayfish, gophers and various other burrowing animals each season bring large amounts of the finer portions of the lower soil and subsoil to the surface, forming systems
. Elementary lessons in the physics of agriculture. Agricultural physics. [from old catalog]. 1 â 1 m o o ^' .^ m Of Mm Fiij. 35. Section reduced to half natural scale, of the vegetable mould in a field drained anfl reclaimed 15 years before. Showing turf, vegetable mould without stones, mould with fragments of burnt marl, coal cinders and quartz pebbles. After Darwin. rapid and are due to different causes. Earth-woisms, ants, crayfish, gophers and various other burrowing animals each season bring large amounts of the finer portions of the lower soil and subsoil to the surface, forming systems of^ galleries with openings leading out to the free air at. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original King, F[ranklin] H[iram], 1848- [from old catalog]. [Madison, Wis. ] State journal printing company
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Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookcontributorthe, bookdecade1890, bookyear1891
