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 |
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Página 23
... Figure 4. A new wheat originated by selection . The average yield of 89 samples of Minnesota No. 169 , a newly- Blue Stem shown in Figure 1 , grown Specialized plants and bred wheat , originated from the parent animals . Just as the ...
... Figure 4. A new wheat originated by selection . The average yield of 89 samples of Minnesota No. 169 , a newly- Blue Stem shown in Figure 1 , grown Specialized plants and bred wheat , originated from the parent animals . Just as the ...
Página 36
... shown by the map in Figure 7 , reaching to the Missouri and the Ohio rivers . It is not thought that this movement took place rapidly or even regularly , as during some ages the cold would increase more rapidly than at other times ...
... shown by the map in Figure 7 , reaching to the Missouri and the Ohio rivers . It is not thought that this movement took place rapidly or even regularly , as during some ages the cold would increase more rapidly than at other times ...
Página 44
... illustrated in Figures 8 and 9 . This is evidence that when the glacier was rapidly melt- ing , while its southern ... shown in Figure 7 . This lake has recently been named " Ancient Lake Agassiz . " The land slopes to the north in ...
... illustrated in Figures 8 and 9 . This is evidence that when the glacier was rapidly melt- ing , while its southern ... shown in Figure 7 . This lake has recently been named " Ancient Lake Agassiz . " The land slopes to the north in ...
Página 46
... shown in Figure I I. When the ice dam in the vicinity of Lake Winnipeg was melted low enough for the water from " Ancient Lake Agassiz " to flow over it , and thus drain the water of that lake to the northward into Hudson Bay , instead ...
... shown in Figure I I. When the ice dam in the vicinity of Lake Winnipeg was melted low enough for the water from " Ancient Lake Agassiz " to flow over it , and thus drain the water of that lake to the northward into Hudson Bay , instead ...
Página 47
... Figure 10. The area inclosed by the line thus drained by the Minnesota river . The area at surrounded by the solid line , thus Mississippi river above where the two rivers line , thus - banks of the Minnesota , as shown in B , Figure 11 ...
... Figure 10. The area inclosed by the line thus drained by the Minnesota river . The area at surrounded by the solid line , thus Mississippi river above where the two rivers line , thus - banks of the Minnesota , as shown in B , Figure 11 ...
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Farm Development; An Introductory Book in Agriculture, Including a ... W. M. Hays Sin vista previa disponible - 2017 |
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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