( ^69 ) 



INDEX. 



A. 



Adria^ scoop wheel at, 2^7 

 Aeration of the soil by drainage, 38 

 Agricultural Show, trials of engines 



at, 61 

 Air spaces in drained soils, 37 

 Airy, Sir G. B., on scoop wheels, 72 



W,, on scoop wheels, 84 



on screw pumps, 90 



Anderson, W., on Wexford Harbour 



machinery, 133 

 Angles of egress and ingress for 



scoops, 75 

 Appleby &: Co,, machinery erected 



by, 125 

 Appold, J. G., centrifugal pump, 92, 



118 

 Archimedean screw pump, %^ 



angle of tilt, 89 



spiral angle, 90 



, discharging capa- 



city, 89 



comparative cost of, 



53 



efficiency, 90 



at Katatbeh, 156 



Ardizzoni, pump at Ferrara, 13^5 

 Arkelschendam, steam used for 



pump, 57 

 Atfeh, pumping station at, 155 



quantity of water raised by 



wheels, 82 

 Atkinson, A., Butterwick engine, 127 



B. 



Ballyteigne Reclamation, sluices for, 



28 

 Barker, on coal consumption, 62 

 Batter of drains, 15 



Beemster Polder, pumps at, 153 

 Beijerinck, on scoop wheels, 75 

 Bijlermeer Polder, pump at, 150 

 Black Sluice drainage, 4 

 Boezem, or collectmg basin, 141 

 Boilers, insurance of, 63 

 Boning rods, for setting out drains, 



47 

 Bottisham Fen, steam used for 



draining, 58 

 Breasts, movable, for scoop wheels, 



78 

 Brown, C, on pumps, 102 

 Bucket pumps, 50 



comparative cost of, 53 



at Lake Haarlem, 144 



Bull Hassocks wheel, 130 

 Bullewijker Polder, pumping station 



at, 149 

 Burnt Fen, pumping station at, 119 

 Butterley Iron Company's engines, 



58, 122 



Scoop wheels, 73 



Butterwick pump, 127 



C. 



Carmichael, G., pumping engines, 



120, 122 

 Catchwater drains, 7 

 Centrifugal pumps as compared 



with scoop wheels, 5 1 

 report on use of, by Dutch 



Commission, 51 



comparative cost of, 53, 93 



cost of, and engines, 67 



description of, 92, 95 



materials passingthrough, 



94 



