Draining for Profit: And Draining for HealthOrange Judd Company, 1890 - 252 páginas |
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Página 17
... lower parts . The subsoil , to a great extent , con- sists of clay or other compact material , which is not im- pervious , in the sense in which india - rubber is impervious , ( else it could not have become wet , ) but which is suffi ...
... lower parts . The subsoil , to a great extent , con- sists of clay or other compact material , which is not im- pervious , in the sense in which india - rubber is impervious , ( else it could not have become wet , ) but which is suffi ...
Página 24
... lower portions of adjoining land . The first of these is beneficial , because it contains fresh air , carbonic acid , ammonia , nitric acid , and heat , obtained from the atmosphere ; and the flowage water contains , in addition , some ...
... lower portions of adjoining land . The first of these is beneficial , because it contains fresh air , carbonic acid , ammonia , nitric acid , and heat , obtained from the atmosphere ; and the flowage water contains , in addition , some ...
Página 28
... lower soil for so large a part of the year , has been re- moved by draining , that roots can penetrate to any con- siderable depth , and , in fact , the cracking of undrained soils , in drying , never extends beyond the separation into ...
... lower soil for so large a part of the year , has been re- moved by draining , that roots can penetrate to any con- siderable depth , and , in fact , the cracking of undrained soils , in drying , never extends beyond the separation into ...
Página 33
... lower level , and thus re- move the water table to the proper distance from the sur- face . This subject will be more fully treated in a future chapter , in considering the question of the depth , and the intervals , at which drains ...
... lower level , and thus re- move the water table to the proper distance from the sur- face . This subject will be more fully treated in a future chapter , in considering the question of the depth , and the intervals , at which drains ...
Página 34
... lower the temperature of the soil as to retard the growth of plants ; the small amount dried out of the particles of the soil , ( water of absorption , ) will only keep it from being raised to too great a heat by the mid - summer sun ...
... lower the temperature of the soil as to retard the growth of plants ; the small amount dried out of the particles of the soil , ( water of absorption , ) will only keep it from being raised to too great a heat by the mid - summer sun ...
Otras ediciones - Ver todas
Draining for Profit, and Draining for Health George E 1833-1898 Waring Sin vista previa disponible - 2015 |
Términos y frases comunes
acre agricultural allow basin bottom brick bushels carried cause cents clay collars commenced condition connection considerable contour lines cost course covered crop cultivation deposit depth discharge diseases distance ditch drainage dyke earth effect Ensilage evaporation fall Farm farmer feet deep fever field fifth column filled flow foot four feet Gisborne grade ground Hackensack River heat heavy rain houses improvement inches joints kiln labor laid land lateral drains laying length less lower main drain malarious manure marsh matters moisture muddy water nearly necessary obstruction operation outlet particles pipes placed plants plow porous practice prevent quantity rain-fall removed result retentive roots salt marsh saturated season sewage sewers shown in Fig side silt silt-basin slope soakage soil spring stakes steepest descent stone subsoil sufficient surface tide tile tile-draining tion typhoid fever undrained upper end whole width