Farm Development: An Introductory Book in Agriculture, Including a Discussion of Soils, Selecting & Planning Farms, Subduing the Fields, Drainage, Irrigation, Roads, Fences, Together with Introductory Chapters Concerning Farm Business, and the Relations of General Science to AgricultureOrange Judd Company, 1910 - 391 páginas |
Dentro del libro
Resultados 1-5 de 31
Página x
... Cement culvert with wing walls . 302 178 Behavior of a hard and a yielding surface under wheel pressure 304 179 Macadam road cross section . 305 180 Roadway made of 8 inches of gravel on peat . 305 181 Road with side ditches with ...
... Cement culvert with wing walls . 302 178 Behavior of a hard and a yielding surface under wheel pressure 304 179 Macadam road cross section . 305 180 Roadway made of 8 inches of gravel on peat . 305 181 Road with side ditches with ...
Página xii
... Cement posts with wire loops for spacing fence wires . Cement corner post carrying iron gate . 372 373 260 Cement corner posts , brace post , and brace . 373 261 Stretching a ribbon of woven wire to attach it to a cor- ner post 374 262 ...
... Cement posts with wire loops for spacing fence wires . Cement corner post carrying iron gate . 372 373 260 Cement corner posts , brace post , and brace . 373 261 Stretching a ribbon of woven wire to attach it to a cor- ner post 374 262 ...
Página 68
... cement after the water has evaporated , and bind together the particles of sur- face soil into a crust . Here cultivation is necessary to open the soil to a freer circulation of the air . The soil is not such an inert mass as is ...
... cement after the water has evaporated , and bind together the particles of sur- face soil into a crust . Here cultivation is necessary to open the soil to a freer circulation of the air . The soil is not such an inert mass as is ...
Página 210
... cement , these roots may be kept out . This , of course , is not desired in land needing drainage , since the water could not penetrate into the tiles , and is only necessary to thus protect a length of several rods where a tile drain ...
... cement , these roots may be kept out . This , of course , is not desired in land needing drainage , since the water could not penetrate into the tiles , and is only necessary to thus protect a length of several rods where a tile drain ...
Página 232
... cement . Properly laid tiles very rarely fail to continue to be indefinitely efficient . In a wide ex- perience the writer knows of only relatively very few tile drains which have become obstructed . Drainage education . - Education in ...
... cement . Properly laid tiles very rarely fail to continue to be indefinitely efficient . In a wide ex- perience the writer knows of only relatively very few tile drains which have become obstructed . Drainage education . - Education in ...
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Farm Development; An Introductory Book in Agriculture, Including a ... W. M. Hays Sin vista previa disponible - 2017 |
Términos y frases comunes
acre agricultural amount of water animals better biped bottom brace building canal capillary capillary action capstan carry cement cents clay construction corn corner post cost crop rotation crops cubic yard cultivation culverts datum deep depth drain tiles drainage earth engine expense farm home farmers farmstead feet fence fields flood water flow Fresno scraper furrow-slice furrows gate glacial glacier grade grain Grass gravel ground water height Illustrated inches instrument irrigation labor lake Lake Agassiz layer low area macadam material mile Minnesota Minnesota river Mississippi river mixed moisture necessary open ditch outlet particles peat plow practical profitable rain rainfall reversible road machine river road roller roadway rock roots rotation rural sand schools showing shown in Figure side soil spade station stone stream stumps subsoil tile drains tion tivated trees wagon wheat wire fence