r 's ] 



238. Comparison of costs &c. The centrifugal pump 

 used for irrigation purpose at the Cawnpore Experimental 

 Farm irrigates 4 acres of land per day and it costs Rs. 5 

 per day in coal, oil and wages of the mechanic. The Cawn- 

 pore chain pump worked by 2 men (4 men being required 

 for working it without interruption) irrigates about an acre 

 a day at a cost of about 8 annas where the water is within 

 4 feet as at Cawnpore. Where the water is deeper, say 10 to 

 12 feet, as at Sibpur, the Barakar pump (which is something 

 like the Cawnpore pump) is able to irrigate only ^rd of an 

 acre a day, i.e. less than the swing-basket does and the wages 

 of labour also are at Sibpur double of what they are at Cawrv- 

 pore, so that the cost per acre is about Rs. 3 at Sibpur 

 against 8 annas the cost incurred at Cawnpore.' The Raided 

 Water-lift irrigates about ^rd of an acre per day at a 

 cost of 6 as. (one bullock and one man), under conditions 

 prvailing at Cawnpore. The Stoney's Water-Lift worked by a 

 strong .pair of bullocks and a man, irrigates from a deep 

 well of 30 to 40 ft. about Jrd of an acre per diem at a cost 

 of 12 as. (about Re. 1/8 in Calcutta). On sandy soils less 

 work can be done and on stiff clay soils more. The 

 figures given apply to a medium loam. It is important to 

 compare these high class or improved irrigation appliances 

 with those in common use in this country, via., the swing- 

 basket, the tera, the don, the single and double mdt and 

 t|ie single Persian wheel (Punjab pattern), (i) To work the 

 swing-basket three men are required, the man distributing the 

 water relieving in turn the two men employed in baling out 

 the water. The height to which the water can be lifted with 

 the swing-basket is 5 up to 10 feet. About ^rd cub. ft. of 

 water is thrown up each time and there are about 20 delive- 

 ries per minute, which gives 400 cub. ft. of water per hour. 

 If 25 per cent, is allowed for wastage, percolation &c., the 

 actual discharge comes to 300 cub. ft. i. e., 1890 gallons. (2) 

 To work the tera or dhekli (i.e., the ordinary lever arid 

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