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fuperior to the fimple preffure of the column IK ; and 
therefore equal to a greater refiftance (if required) than 
a preffure of four or five feet, perpendicular height. 
It feems neceffary further to obferve, that the confump- 
tion of water in the kitchen offices is very confiderable ; 
that is, that water is frequently drawing from morning 
till night all the days of the year. 
Qq 
VoL. LXV, 
XXV. 03- 
