Draining for Profit, and Draining for HealthOrange Judd Company, 1867 - 238 páginas |
Dentro del libro
Resultados 1-5 de 38
Página 11
... proper order . The first growth of the embryo plant , ( in the seed , ) is merely a change of form and position of the material which the seed itself contains . It requires none of the elements of the soil , and would , under the same ...
... proper order . The first growth of the embryo plant , ( in the seed , ) is merely a change of form and position of the material which the seed itself contains . It requires none of the elements of the soil , and would , under the same ...
Página 14
... proper condition of soil " for germination , and in " fact for every period of the " plant's development ; and this condition occurs when the " soil is moist , but not wet , -that is to say , when it has the " color and appearance of ...
... proper condition of soil " for germination , and in " fact for every period of the " plant's development ; and this condition occurs when the " soil is moist , but not wet , -that is to say , when it has the " color and appearance of ...
Página 23
... proper level is again at- tained . Spring water entering from below , and water ooz- ing from the adjoining land , will be removed in like man- ner , and the usual condition of the soil , above the water- table , will be that ...
... proper level is again at- tained . Spring water entering from below , and water ooz- ing from the adjoining land , will be removed in like man- ner , and the usual condition of the soil , above the water- table , will be that ...
Página 33
... proper remedy is to tap it at a lower level , and thus re- move the water table to the proper distance from the sur- face . This subject will be more fully treated in a future chapter , in considering the question of the depth , and the ...
... proper remedy is to tap it at a lower level , and thus re- move the water table to the proper distance from the sur- face . This subject will be more fully treated in a future chapter , in considering the question of the depth , and the ...
Página 44
... proper effect on vegeta- tion . If kept saturated with water , so that the air is excluded , animal manures lie nearly inert , and vegetable matters decompose but incompletely , -yielding acids which are in- jurious to vegetation , and ...
... proper effect on vegeta- tion . If kept saturated with water , so that the air is excluded , animal manures lie nearly inert , and vegetable matters decompose but incompletely , -yielding acids which are in- jurious to vegetation , and ...
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 amount basin bottom brick bushels carried cause cent CHAPTER clay collars commence 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 inclination joints kiln labor laid land laying length less lower main drain malarious manure marsh matters measure moisture muddy water nearly necessary obstruction operation ORANGE JUDD outlet particles pipes placed plants plowing porous practice prevent proper 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 tide tile drain tion typhoid fever under-draining undrained vegetable whole width
Pasajes populares
Página 80 - ... part.* When the Regent's Park was first drained large conduits were in fashion, and they were made circular by placing one horseshoe tile upon another. It would be difficult to invent a weaker conduit. On re-drainage innumerable instances were found in which the upper tile was broken through the crown, and had dropped into the lower. Next came the...
Página 221 - Excess of moisture, even on lands not evidently wet, is a cause of fogs and damps. " 2. Dampness serves as a medium for the conveyance of any decomposing matter that may be evolved, and adds to the injurious effects of such matters in the air; in other words, the excess of moisture may be said to increase or aggravate atmospheric impurities. " 3. The evaporation of the surplus moisture lowers the temperature, produces chills, and creates or aggravates the sudden and injurious changes or fluctuations...
Página 68 - A farmer manures a field of four or five inches of free soil reposing on a retentive clay, and sows it with wheat. It comes up, and between the kernel and the manure it looks well for a time, but anon it sickens. An Irish child looks well for five or six years, but after that time potato-feeding, and filth, and hardship, begin to tell.
Página 79 - ... material, even when the drain is completed, offers an imperfect resistance, but the constant pressure together of the sides, even when it does not produce a fracture of the soil, catches hold of the feet of the tile and breaks it through the crown. Consider the case of a drain formed...
Página 67 - ... against evaporation; and we are inclined to believe that any prejudicial combined action of attraction and evaporation is thereby well guarded against. The facts stated seem to prove that less will not suffice. So much on the score of temperature, but this is not all. Do the roots of esculents wish to penetrate into the earth — at least, to the depth of some feet? We believe that they do.
Página 167 - ... if it does come, then draining will pay for itself speedily. For instance, Mr. Johnson had a lot of thirteen acres on the shore of the lake, where the bank at the foot of the lot was perpendicular to the depth of thirty or forty feet. He supposed from this fact, and because the surface seemed very dry, that he had no need to drain it. But somehow he lost his...
Página 166 - ... clay tiles were buried in the ground. But this increase of crop is not the only profit of drainage ; for Mr. Johnston says that on drained land one half the usual quantity of manure suffices to give maximum crops. It is not difficult to find a reason for this. When the soil is sodden with water, air...
Página 225 - In the system now adopted, it has been sought to remove these evils by the construction of new lines of sewers, laid at right angles to the existing sewers, and a little below their levels, so as to intercept their contents, and convey them to an outfall 14 miles below London Bridge.