... Draining for Profit, and Draining for Health that a root had entered a joint between two 3-inch pipes, and had traveled 5 yards to the mouth of the drain, and 9 yards upthe stream, forming a continuous ... lineof steepest descent cannot be parallel, and, consequently, the97Fig. 20 - MAP WITH DRAINS AND CONTOUR LINES.x Draining for Profit, and Draining for Health Fig. 24 - SILT-BASIN, BUILT TO THE ... the soil and into the pipes, must, in this case, be considered to have beenperfect; and their observed action is the more determinate and valuable as regards time and effect, as the land was...