[ 5'M 



■veflel be fuppofed to be kept conftantly full, the velocity of 

 the effluent water will encreafe fo as at length to become equal 

 to that which a heavy body would acquire in falling from an 

 infinite height. 



Since the middle filament of particles is difcharged with the 

 "full velocity due to the entire altitude of the fluid above the 

 orifice, experiments made on the diftance or height to which 

 fluids fpout, will be found to agree very well with theory, but 

 it by no means follows, that all the filaments fliould be difcharged 

 with the fame velocity : the quantity of the fluid therefore 

 difcharged in a given time, may be lefs than that which would 

 be difcharged, if all the filaments were difcharged with the 

 velocity due to the entire altitude ; becaufe this quantity de- 

 pends on the mean velocity of all the filaments. Hence there- 

 fore it cannot be inferred from thefe experiments, compared 

 with thofe which relate to the height or diftance to which the 

 fluid fpouts, that the velocity of the water in the orifice is 

 lefs than that which is due to the entire altitude ; and that it 

 is accelerated immediately after it gets out of it: becauie the 

 diftance to which the fluid fpouts, depends on the central 

 filament only, but tlie quantity difcharged on the mean velocity 

 of the whole. 



To bring this queftion to the teft of experiment, if all the 

 particles were equally accelerated at their difcharge from the 

 orifice, and immediately after they leave it, they ought all to be 



projected 



