Illustrations

[Fig. 1 - A DRY SOIL.]
[Fig. 2 - A WET SOIL.]
[Fig. 3 - A DRAINED SOIL.]
[Fig. 4 - MAP OF LAND, WITH SWAMPS, ROCKS, SPRINGS AND TREES. INTENDED TO REPRESENT A FIELD OF TEN ACRES BEFORE DRAINING.]
[Fig. 5 - MAP WITH 50-FOOT SQUARES, AND CONTOUR LINES.]
[Fig. 6 - LEVELLING INSTRUMENT.]
[Fig. 7 - LEVELLING ROD.]
[Fig. 8 - MAP WITH CONTOUR LINES.]
[Fig. 9 - WELL'S CLINOMETER.]
[Fig. 10 - STONE PIT TO CONNECT SPRING WITH DRAIN.]
[Fig. 11 - STONE AND TILE BASIN FOR SPRING WITH DRAIN.]
[Fig. 12 - LINE OF SATURATION BETWEEN DRAINS.]
[Fig. 13 - HORSE-SHOE TILE.]
[Fig. 14 - SOLE TILE.]
[Fig. 15 - DOUBLE-SOLE TILE.]
[Fig. 16 - ROUND TILE AND COLLAR, AND THE SAME AS LAID.]
[Fig. 19 - THREE PROFILES OF DRAINS, WITH DIFFERENT INCLINATIONS.]
[Fig. 20 - MAP WITH DRAINS AND CONTOUR LINES.]
[Fig. 21 - PROFILE OF DRAIN C.]
[Fig. 22 - SET OF TOOLS.]
[Fig. 23 - OUTLET, SECURED WITH MASONRY AND GRATING.]
[Fig. 24 - SILT-BASIN, BUILT TO THE SURFACE.]
[Fig. 25 - FINISHING SPADE.]
[Fig. 26 - FINISHING SCOOP.]
[Fig. 27 - BRACING THE SIDES IN SOFT LAND.]
[Fig. 28 - MEASURING STAFF.]
[Fig. 29 - BONING ROD.]
[Fig. 30 - POSITION OF WORKMAN AND USE OF FINISHING SCOOP.]
[Fig. 31 - SIGHTING BY THE BONING-RODS.]
[Fig. 32 - PICK FOR DRESSING AND PREFORATING TILE.]
[Fig. 33 - LATERAL DRAIN ENTERING AT TOP.]
[Fig. 34 - SECTIONAL VIEW OF JOINT.]
[Fig. 35 - SQUARE BRICK SILT-BASIN.]
[Fig. 36 - SILT-BASIN OF VITRIFIED PIPE.]
[Fig. 37 - TILE SILT-BASIN.]
[Fig. 38 - MAUL FOR RAMMING.]
[Fig. 39 - BOARD SCRAPER FOR FILLING DITCHES.]
[Fig. 40 - CROSS-SECTION OF DITCH (FILLED), WITH FURROW AT EACH SIDE.]
[Fig. 41 - FOOT PICK.]
[Fig. 42 - PUG-MILL.]
[Fig. 43 - PLATE OF DIES.]
[Fig. 44 - CHEAP WOODEN MACHINE.]
[Fig. 45 - MANDRIL FOR CARRYING TILES FROM MACHINE.]
[Fig. 46 - CLAY-KILN.]
[Fig. 47 - DYKE AND DITCH.]
[Fig. 48 - OLD STYLE HOUSE DRAINAGE AND SEWERAGE.]
[Fig. 49 - MODERN HOUSE DRAINAGE AND SEWERAGE.]