278 



INDEX. 



Spar, gypseous, . . . . .165 



Stitching, . . . . 1%8 



Scarifying, . . . . . .178 



Soils, physical properties of . . . 171 



Soils, weight of . . . .171 



Soils, state of division of . . . 171 



Soils, firmness and adhesiveness of . . .172 



Soils, power of imbibing water . . . 172 



Soils, power of containing water . . .172 



Soils, power of retaining water, . . . 173 



Soils, capillary power of . . . .173 



Soils, their contractibility on drying, . .' 174 



Soils, their power of absorbing gaseous matters, . 174 



Soils, their power of absorbing heat, . . 174 



Soils, their power of retaining heat, . . .175 



Soils, their power of radiating heat, . . 175 



Soils, their ultimate uses to plants, . . .176 



Subsoil ploughing, . . . . 178 



Stercology, . . . . . .190 



Skins of animals as manure, . . . 192 



Straw as manure, . . . . .197 



Saw dust as manure, . . . . 197 



Soot as manure, . . . . .198 



Saline manures, ..... 204 



Sulphate of soda as manure, . . . 204- 



Sulphate of lime, or gypsum, as manure, . . 205 



Silicates of potash and soda as manures, . .206 



Salts of ammonia as manure, . . . 206 



Screw, . . . . . 234 



T 



Tenacity, . . . . . .28 



Tannin, ...... 64 



Tertiary strata, . . . . .78 



Transition rocks, . . . . . 78 



Tissue, cellular . . . . .95 



Tissue, woody . . . ... 95 



Tissue, vasiform . . . .95 



Tissue, vascular ..... 95 



Tissue, laticiferous . . ... .96 



Tendrils, . 120 



