Draining for Profit: And Draining for HealthOrange Judd Company, 1890 - 252 páginas |
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Resultados 1-5 de 28
Página 25
... five feet , freely though less readily than the lighter loams . Now , imagine the drains to be closed up , leaving no out- let for the water , save at the surface . This amounts to a raising of the dam to that height , and additions to ...
... five feet , freely though less readily than the lighter loams . Now , imagine the drains to be closed up , leaving no out- let for the water , save at the surface . This amounts to a raising of the dam to that height , and additions to ...
Página 28
... five feet parallel drains in the " land , the water passes at once into them and is carried ' off . In fact , when heavy rain falls upon clay lands in this " cracked state , it passes off too quickly , without adequate " filtration ...
... five feet parallel drains in the " land , the water passes at once into them and is carried ' off . In fact , when heavy rain falls upon clay lands in this " cracked state , it passes off too quickly , without adequate " filtration ...
Página 29
... five feet drains , in the line of steepest descent . Showing " us his drains this spring , he said : " They do better year " by year ; the water gets a habit of coming to them ' —a very " correct statement of fact , though not a very ...
... five feet drains , in the line of steepest descent . Showing " us his drains this spring , he said : " They do better year " by year ; the water gets a habit of coming to them ' —a very " correct statement of fact , though not a very ...
Página 40
... five inches , or about one - fifth of the rain - fall . Water thus deposited on the soil is absorbed more or less completely , in propor- tion to the porosity of the ground . The extent to which plants will be affected by drought ...
... five inches , or about one - fifth of the rain - fall . Water thus deposited on the soil is absorbed more or less completely , in propor- tion to the porosity of the ground . The extent to which plants will be affected by drought ...
Página 44
... five years , by excessive moisture , which kept it from the air . If the soil be saturated with water in the spring , and , in summer , ( by the compacting of its surface , which is caused by evaporation , ) be closed against the ...
... five years , by excessive moisture , which kept it from the air . If the soil be saturated with water in the spring , and , in summer , ( by the compacting of its surface , which is caused by evaporation , ) be closed against the ...
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