Draining for Profit: And Draining for HealthOrange Judd Company, 1890 - 252 páginas |
Dentro del libro
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Página 25
... tide above the brink of the dam , sets the drains running , until it is all removed . In its descent through the ground , this wa ter clears the passages through which it flows , leaving a better channel for the water of future rains ...
... tide above the brink of the dam , sets the drains running , until it is all removed . In its descent through the ground , this wa ter clears the passages through which it flows , leaving a better channel for the water of future rains ...
Página 194
... tide rushing twice every day for a very great dis " tance up these channels , driving back the fresh waters , " and overflowing with them , so that the whole level be- . came deluged with deep water , and was , in fact , one " great bay ...
... tide rushing twice every day for a very great dis " tance up these channels , driving back the fresh waters , " and overflowing with them , so that the whole level be- . came deluged with deep water , and was , in fact , one " great bay ...
Página 195
... tide , ( twice a day , ) it will be necessary to adopt more expensive , and more effective measures , but on ordinary salt meadows , which are deeply covered only at the spring tides , ( occur- ring every month , ) the following plan ...
... tide , ( twice a day , ) it will be necessary to adopt more expensive , and more effective measures , but on ordinary salt meadows , which are deeply covered only at the spring tides , ( occur- ring every month , ) the following plan ...
Página 198
... tide , so that the returning flow shall not enter to wash away the material which has been thrown in . If , as is often the case , these creeks are not merely tidal estuaries , but receive brooks or rivers from the upland , provision ...
... tide , so that the returning flow shall not enter to wash away the material which has been thrown in . If , as is often the case , these creeks are not merely tidal estuaries , but receive brooks or rivers from the upland , provision ...
Página 199
... tide , so that , during the whole operation , none of the filling shall be washed away by water flowing over its top . If the creek has a sloping bottom , the work may be commenced earlier , as soon as the tide commences to re- cede ...
... tide , so that , during the whole operation , none of the filling shall be washed away by water flowing over its top . If the creek has a sloping bottom , the work may be commenced earlier , as soon as the tide commences to re- cede ...
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