SMALL WATER SUPPLIES. 



Impurities in water . . _ - 141 



Intermittent springs . _ - 17 



Joints of pipes . . - 150 



Jurassic rocks - ----- 20 



K 



Kaye-Parry on Dublin water - - - -12 



Laying cast-iron pipes . - 154 



Lead pipes, water in ----- n 



- service pipes . . . - 152 



Limestone ..... - 21 



Line of rupture - . . _ - 128 



Lining for borehole - - - - '39 



-for wells 30 _ 33 



Loss by evaporation . . j^ 



-- of head - "'--- 59 



M 



Masonry dams - - . . . - - 118 



-- materials for - - - - - no 



Mean velocity of stream - 5<5 



Media for filters 



141 



Metal in water ---.._ 



Millstone grit - - . . _ ' ~ _ - 2 1 



Mitre valves - - . . " . . \ 



N 

 Nitrogen in water - . 



