20 APPARATUS *OR RAISING WATER* 



mixture. From the minute divifion of the air, it is not im- 

 probable, that a fmall portion might be carried along with the 

 current of water under the bottle, and afcend through the 

 pipe D E j but this was not determined. If there was no 

 defect in the apparatus, it appears, that it will not be fo ad- 

 vantageous, in the conduction of a working machine upon 

 this principle, to employ a condenfing column fo heavy as 24 

 feet, as one that is lighter. 

 Other trials. Feb. 2S, 1 804. The pipe A B being fhortened to 22 feet 



5 inches, and D E to 18 feet 3 inches, the orifice of the ad- 

 jutage at E being four lines in diameter, the bottle was emp- 

 tied by 13, 12£, 14, 13, 13, 12, and 14 pints of effluent 

 water, in feven fucceffive trials, as in thofe of May, 1803. 



March 9. With a fall 3 feet 9 inches, AB being 15 feet 

 one inch, half a pint of air was collected during the difcharge 

 of 12^ pints of water. Again, the orifice of emiffion being 

 four lines in diameter ; the fall 4 feet 2 inches ; A B 15 feet 8 

 inches ; D E 1 1 feet 6 inches ; nine ounce meafures of air 

 were conveyed into the bottle, in one minute, during the dif- 

 charge of 10 pints of water, in five fucceffive trials: and 

 when the diameter of the higher orifice of the pipe D E was 

 half an inch, the fame quantity of air was carried down in 50 

 feconds, by nine pints of effluent water, including that dis- 

 placed from the bottle. When AB was 15 feet 8 inches; 

 DE 13 feet 2 inches; the fall 2 feet 6 inches; nine ounce 

 meafures of air were collected in the bottle, by the difcharge 

 of 16 pints, in 90 feconds; in 105 feconds, by 18 pints; and 

 again, by 18 pints, in 90 feconds. 



March 16. The fall being 2 feet; A B 8 feet 5 inches; 

 D E 6 feet 5 inches ; and the diameter of its higher orifice 

 half an inch ; ten ounce meafures of air were collected in one 

 minute; again in 64 feconds, when the effluent water mea- 

 fured 10 pints; and again in one minute, when 10 pints. 



Having now (hewn what power a machine operating upon 

 this principle may be expected to pofTefs, I proceed to fhew 

 how its principle may be applied to practice. 

 Defcrlption of Fig, 2, Plate I. exhibits a machine for railing water above 



the machine as lhe ciftern# 



conftrudted ror -.•* . 



railing watr, R reprefenls a cittern (upplied by a Ipnng, where there are 



by air condenfed f QUr Qr fiye f eet f a J] f or tne water# 



in an inverted -^ ^, r 



fyphon. ' W n ' 



