, bucket-lift) one man is employed at the bucket and one man 

 for distributing the water. The water can be easily raised 

 1 6 ft. high. The contents of the bucket or dol is \ cub. ft. The 

 number of discharges per minute is about 3. The discharge 

 per hour is therefore 90 cub. ft. Allowing 10 per cent, in 

 this case for wastage, we get about 81 cub. ft. 500 gallons 

 per hour. (3) The Don or Canoe-shaped lift made of trunks 

 of trees hollowed out or of iron (iron dons being now in com- 

 mon use in Birbhum and Murshidabad), is also worked by 

 one man. It raises water only up to a height of 5 or 6 ft. 

 There are 10 deliveries per minute each delivery being about 

 3 cub. ft.; 1800 cub. ft. are thus lifted per hour. Waste of 

 only about 10 per cent, takes place in this case also. The 

 actual quantity of water lifted is therefore 1620 cub. ft. which 

 at 6 T % gallons per cub. ft. gives 10,206 gallons per hour. 

 (4) To work the single-w^ with self-delivery tube, one man and 

 two bullocks are required besides the man distributing the water. 

 Water can be lifted from a depth of 40 to 80 ft. The bullocks 

 walk at the rate of 2 miles an hour. For each lift of 40 ft. 

 the bullocks traverse 80 ft. The contents of the bag or 

 bucket is 3 cub. ft. The number of lifts per minute is only 

 one. So the discharge per hour is 60X3 /. e. 180 cub. ft. 

 Allowing 25 per cent, of loss by spilling 135 cub. ft. or 850 

 gallons per hour is the result obtained. But whereas, at the 

 Sibpur farm, spilling is avoided by the bucket being made to 

 slide up two tight steel ropes as in Stoney's Water-Lift, the 

 loss may be put down at only 10 per cent, and in that case 

 we get over 1000 gallons per hour. The draught or traction 

 required being 255 Ibs., two bullocks are essential. (5) The 

 Double-mot also requires one man and two bullocks. The 

 diameter of the whim being 3ft. and the diameter of the 

 bullock-walk being i6ft., the bullocks walking at the rate of 

 2 miles per hour can take 3*4 turns per minute. The time 

 taken for raising the bag or bucket from a depth of 4oft. is 

 1:4 minutes. The content of the bag or bucket being 3-;cub.ft., 



