172 



Index. 



Gwynne, J. & H., description of 



centrifugal pump, 95 

 efficiency of their ma- 



cMnes, loi 

 machinery erected by. 



103, 104, 134, 135, 149? ISO 



H. 



Haarlem, Lake, windmills, 57 



description of drainage, 141 



Haddenham Fen scoop wheel, 82 

 Halfweg pumping station, 147 

 coals used for different lifts, 



62 

 Hamit, G., patent for scoop wheel, 



82 

 Harrison, A. J dredging machine, 23 



Podehole engines, 109 



Hatfield Chace scoop wheels, 129 

 Hathorn, Davey & Co., Burnt Fen 



pump, 121 

 Hawkshaw, Sir J., on rainfall, 8 



Middle Level syphons, 34 



Lade Bank pumps, no 



Head or lift of scoop wheel, 84 

 Heathcote, J. M., on pumps and 



scoop wheels, 54 

 Hett, L., centrifugal pumps, 102, 



127, 129, ii;3 

 Holland, drainage in, 2 

 Horse-power of engines, 166 

 Huet, A., Z^ 

 Hull river, 13 

 Humber river, 19 

 Hundred Foot pumping station, 



113 



Hunt, Professor, on effect of drain- 

 age, 37 



HydrauHc mean depth, 12, 25, 161 



L 



Inclination of surface of water, 14 

 Ingress, angle of, for scoops, 75 

 Insurance of boilers, 63 



Katatbeh, description of machinery, 



IS3 



Katwijk pumping station, 148 



quantity of water raised by 



wheels, 82 

 Kilmore Reclamation, sluices used 



at, 28 

 Kingston, J., scouring machine, 22 

 Korevaer, Mr., 87, 90 



L. 



Lade Bank pumping station, 94, 



no 

 Ladles, 74 



Land occupied by drains, 16 

 improvement of, by drainage, 



41 

 table showing capacity of 



drains and sluices for draining, 



167 

 Leeghwater, drainage of Lake 



Haarlem, 141 



engine, Lake Haarlem, 144 



Legmeer Polder, pump at, 104 

 Levelling rods for field drains, 47 

 Lift of scoop wheels, 84 

 Lifts, coal used for different, 62 

 Lincolnshire Agricultural Society, 



trials of engines, 61 

 Littleport and Downham drainage 



district, 112 

 windmills used in, 56 



M. 



Maas river, deepening by scour, 



21 

 Machines used for dredging and 



scouring, 20 



for raising water, 50 



Madden, Dr., experiments on 



drainage, 40 

 Maintenance cost of drainage 



engines, 68 



