Draining for Profit, and Draining for HealthOrange Judd Company, 1902 - 252 páginas |
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Página 19
... undrained condition , the element of luck will continue to play a very important part in its cultivation , and bad luck will often play sad havoc with the year's accounts . Land of this character is usually kept in grass , as long as it ...
... undrained condition , the element of luck will continue to play a very important part in its cultivation , and bad luck will often play sad havoc with the year's accounts . Land of this character is usually kept in grass , as long as it ...
Página 26
... undrained land , and of the effects of its removal , by gravitation , and by evaporation , are based on facts which have been developed by long practice , and on a rational application of well know principles of science . These facts ...
... undrained land , and of the effects of its removal , by gravitation , and by evaporation , are based on facts which have been developed by long practice , and on a rational application of well know principles of science . These facts ...
Página 28
... undrained soils , in drying , never extends beyond the separation into large masses , because each heavy rain , by saturating the soil and expanding it to its full capacity , entirely obliterates the cracks and forms a solid mass , in ...
... undrained soils , in drying , never extends beyond the separation into large masses , because each heavy rain , by saturating the soil and expanding it to its full capacity , entirely obliterates the cracks and forms a solid mass , in ...
Página 36
... undrained por " tion of the moss ; and the result was , that , on a mean “ of 35 observations , the drained soil at 7 inches in depth was 10 ° warmer than the undrained , at the same depth . " The undrained soil never exceeded 47 ...
... undrained por " tion of the moss ; and the result was , that , on a mean “ of 35 observations , the drained soil at 7 inches in depth was 10 ° warmer than the undrained , at the same depth . " The undrained soil never exceeded 47 ...
Página 44
... undrained , retentive soil , it is not often possible to attain that perfect tilth , which is best suited for a proper admixture , and which is easily given after thorough draining . The soil must be regarded as the laboratory in which ...
... undrained , retentive soil , it is not often possible to attain that perfect tilth , which is best suited for a proper admixture , and which is easily given after thorough draining . The soil must be regarded as the laboratory in which ...
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
accumulated acre agricultural allow basin bottom brick bushels carried cause Central Park cents chapter clay collars commenced condition connection considerable contour lines cost course covered crop cultivation deposit depth discharge diseases distance ditch drainage dyke earth effect 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 roots salt marsh saturated season sewage sewers shown in Fig side silt silt-basin slope soakage spring stakes steepest descent stone subsoil sufficient surface tide tile tile-draining tion typhoid fever undrained upper end vegetable whole width