390 



INDEX 



Page 



Soil, sponge-like action of 80 



stratification of 148 



substances, toxic, theory of. 60 



survey 93 



unassorted till, quality 39 



water and the plant 71 



Soils, air spaces 67 



alkaline 66, 138, 266 



areas of types of 53 



Bureau of, Department of 



Agriculture 93 



chalky 64 



classification of 53 



mechanical 63 



clay, mixing sand into 137 



drainage, effect shown in 



various ways 150 



excess of alkali in, washed 



out by irrigation 267 



formed in place 43 



gravelly 64 



heavy clay 263 



.hungry 64 



judging, care needed 92 



light sandy 64 



manuring peaty 134 



mechanical classification of 63 



medium 65 



medium texture 264 



mixing sand into clay 137 



Soils, movement of air in 69 



peaty 65 



puddling of clay 304 



quality, discussion of 58 



room for air in 67 



solidifying by pasturing. ... 131 



warm 64 



water holding power varies 



with different 81 



Sources, water 238 



Spade, opening drains with 200 



Specialized plants and animals. . 23 



Specialties, building for 108 



Specifications for the road surface 289 



Split log drag 344 



Spreading earth and gravel sur- 

 faces 327 



Springy hillsides 143 



Stakes, grade, notes 199 



surveyors' 162 



St. Anthony Falls, history and 



changes 44, 47 



State, benefit by strong race of 



farmers 13 



co-operation in roadmaking 

 should be encouraged by 



the 284 



Stomata 69 



Stone, drains 227 



field, uses for 129 



road, loosening of stone from 



the surface of 345 



worn, reconstruction 346 



Stones, removing 128 



road, value 323 



Stones, uses for field 129 



Page 



Stratification, soil.... 148 



Study, agricultural, interesting 



and useful 16 



Stumps, burning to remove 126 



clearing land of, cost per acre 123 

 Stump land, seeding to grass. ... 126 



pullers, use of 121 



Subirrigation 271 



Subsoil 51 



Subsoiling 71 



Success, enterprise as factor 100 



Surface, drainage 179 



plans for 181 



drains, a section of land with 177 



making a plan for 181 



grade, width of depends upon 



various conditions 312 



materials, mixing 325 



peat, burning the 131 



road, specifications 289 



Surfacing material, road, gravel 



as 323 



mixing of 325 



properties of 305 



Survey, contour or cross section 174 



of roadway 288 



for construction of tile drains 172 

 land, plat of land should 



show 199 



notes, drain, should be well 



preserved 162 



preliminary 286 



Surveying, and mechanical appli 



ances 156, 245, 286 



instruments 158 



line of the ditch 184 



new height of instrument, 



fixing 188 



stakes and tapes 162 



transit 158 



Surveyors' notes should be pre- 

 served 199 



Survey, special notes 198 



Swamps 142 



Swampy countries 287 



Tailings from rock crusher 338 



Tapes, surveyors' 162 



Taxation, method of 282 



Technical education in agricul- 

 ture 3 



Technology, agricultural 31 



Telford road 336 



roads, repairing 345 



Terracing hillsides 138 



Tile drains, construction of 200 



cost of laying 215 



mapping of 174 



opening ditches for 200 



survey for constructioil of . . 172 



Tiles, drain 166 



injury of by freezing 152 



quality of clay used in 166 



Tiles, drain, laying in the ditch. . 206 

 protecting from the roots of 



trees 210 



union at branches of 207 



