Index. 229 



PAGE 



Slope-stakes, notes for * . * ,...,.... i68 



setting 168 



Soil, aeration of 217 



alluvial 15 



carbonic acid in 19 



conservation of moisture of tlie 33 



definition of 19 



empty space in 26 



firmness of 217 



heaving of , 32 



Soils, kinds of , 17 



organic matter in , 16 



origin of 12 



sedentary 14 



structure of 25 



temperature of 218 



transported 15 



Specifications for construction of drains 121-123 



Spirit-level 53 



Staking out drains 71 



Steam-dredges, kinds of. 173, 174 



operation of 173, 174 



Subsoil. 19, 20 



Survey, compass 79> ^o 



Surveys, for open ditches, 166 



tile drains 71, 73 



topography 59> ^4 



practical hints on. 67, 6$ 



System, double-main 45 



gridiron , 43 



grouping 43 



natural 42 



slngle4ine • 46 



Systems of tile drains discussed 42 



Teams, ditching with, 175 



Telford 188 



Tile drains, cleaning , no 



how water enters 37 



inspecting ^ , , 112 



Tile-hook 108 



