Show tile drainage some writers have attributed tile the lowering of the water level to tile drain aye age but it has haa had but little if anything to jo do ns as at a procuring cause to the con coil says the drainage Dri inigo jo journal deel dee ago arves to hold buck back ill alir water for without under draina ge tilt compact surface with open drains alow tho the roadways and unobstructed nat biral outlets for the water causes it to flo llou away rapidly with sleep deep tin the open porous soil will ivill take up t it in water of all y rains ns it fulls nal pass it down to the drain the soil sub soil anti and auder stratas taking up a large proportion of the water pert permitting nitting the excess to pass out through tile the all eilf drains draina the soil from the surface sur fice down to the drain will absorb water to tilt the point of saturation the amount of water required to wet the tha soil depends upon the tha character of tile the soil the finer soils absorbing the greater quantity if the 6 i deep fairce or four feet it is evidell that a hean heavy heany y rainfall will bo be required to wet the soil do down vu to tile tho drain it iq 11 true also that after the rainfall the sur face soil will avill first bo be relieved of any ny ex cess of water so on slowly down to tin the drain tile the water flowing in horn the sides bides of tho the drain necessarily prevents at rapid lowering of the water level su in fact tile t thorough orough ll ol of tile the soil coil serves to hohl bick back tile the wales when compared to the surface fit how where tho the is ia sufficient tu pass tho water of an ordin ordinary iry iain fali down through tho the boil toa boid depth of or tour four feet the vill anu watt long iong 0 after the open draina drahm anti anil natural outlets fur surface drainage liivi havi run dry |