r 



219. Mr. Chatterton thus summarises the trials of the 

 various Madras Water-lifts : 



Foot-tons of work per Ib. weight. 

 Mr. Stoney's Water-lift ... ... 2-253 



Double Mot (Saidapet) ... ... 1*930 



Single Mot (Subba Rao's Improved) ... 2-323 



Subba Rao's See-saw Water-lift ... 3-511 



He also gives the following figures for comparison of the 

 results of the trials : 



220. It may be noted here that the orinary Paicotah 

 (Fig. 41) though a dangerous instrument is still considered 

 in the Madras Presidency the best appliance for lifting 

 water from small depths (say loto 12 ft.) and the single mdt 

 the best for lifting water from great depths. The inexpen- 

 siveness of the appliances, the ease with which they are set 



