Draining for Profit: And Draining for HealthOrange Judd Company, 1890 - 252 páginas |
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Resultados 1-5 de 23
Página 9
... has been prevented , by a wet subsoil , from sending down its roots below the reach of the sun's heat , where it would find . even in the dryest weather , sufficient moisture for a 1 * LAND TO BE DRAINED AND THE REASONS WHY . 9.
... has been prevented , by a wet subsoil , from sending down its roots below the reach of the sun's heat , where it would find . even in the dryest weather , sufficient moisture for a 1 * LAND TO BE DRAINED AND THE REASONS WHY . 9.
Página 12
... find that even this is not always solid , “ but is much more frequently porous , like soil in the mass . " A considerable proportion of this finely - divided part of " soil , the impalpable matter , as it is generally called , is ...
... find that even this is not always solid , “ but is much more frequently porous , like soil in the mass . " A considerable proportion of this finely - divided part of " soil , the impalpable matter , as it is generally called , is ...
Página 14
... find it abundantly supplied with water , but no air . " germination cannot take place . " here that this can never occur exactly in nature , because , " water having the power of dissolving air to a certain " extent , the seed a in Fig ...
... find it abundantly supplied with water , but no air . " germination cannot take place . " here that this can never occur exactly in nature , because , " water having the power of dissolving air to a certain " extent , the seed a in Fig ...
Página 22
... find a natural outlet , but remains until removed by evaporation . Every considerable addition to its water wells up , and soaks its very surface ; and that which is added after it is already brim full , must flow off over the surface ...
... find a natural outlet , but remains until removed by evaporation . Every considerable addition to its water wells up , and soaks its very surface ; and that which is added after it is already brim full , must flow off over the surface ...
Página 30
... find it gradually becoming more and more porous " and friable , -holding water less and less perfectly as the " experiment proceeds , and in the end it will attain a state " best suited to the growth of plants from its deep and " mellow ...
... find it gradually becoming more and more porous " and friable , -holding water less and less perfectly as the " experiment proceeds , and in the end it will attain a state " best suited to the growth of plants from its deep and " mellow ...
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