Draining for Profit: And Draining for HealthOrange Judd Company, 1890 - 252 páginas |
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Página 32
... flat layer of gravel lying upon clay , and having a free outlet , it will follow the course of the gravel , -laterally , -and find the outlet ; if it meet water which is dammed up in the soil , and which has an outlet at a certain ...
... flat layer of gravel lying upon clay , and having a free outlet , it will follow the course of the gravel , -laterally , -and find the outlet ; if it meet water which is dammed up in the soil , and which has an outlet at a certain ...
Página 36
... flat moss , but they only commence 7 inches " below the surface , and do not extend to mid - summer . " At that period of the year the temperature , at 7 inches , never exceeded 66 ° , and was generally from 10 ° to 15 ° " below the ...
... flat moss , but they only commence 7 inches " below the surface , and do not extend to mid - summer . " At that period of the year the temperature , at 7 inches , never exceeded 66 ° , and was generally from 10 ° to 15 ° " below the ...
Página 56
... flat side , or base , on which it stands , and a hollow disk just half filled with some heavy liquid . The glass ... flat base . The line 0.0 . being parallel to the base , when the liquid stands on that line , the flat side is ...
... flat side , or base , on which it stands , and a hollow disk just half filled with some heavy liquid . The glass ... flat base . The line 0.0 . being parallel to the base , when the liquid stands on that line , the flat side is ...
Página 57
... flat side is perpendicular or plumb . In like manner , the intervening angles are marked , and , by the aid of the following tables , the instrument indicates the rate of fall per hundred feet of horizontal measurement , and per hundred ...
... flat side is perpendicular or plumb . In like manner , the intervening angles are marked , and , by the aid of the following tables , the instrument indicates the rate of fall per hundred feet of horizontal measurement , and per hundred ...
Página 58
... under consideration , the depth of the main is often restricted , in nearly level land , to- ward the upper end of the flat which lies next to the out- let , by the necessity for a fall and the 58 DRAINING for profIT AND HEALTH .
... under consideration , the depth of the main is often restricted , in nearly level land , to- ward the upper end of the flat which lies next to the out- let , by the necessity for a fall and the 58 DRAINING for profIT AND HEALTH .
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