OF HYDROSTATICS. 



115 



e in the side of the tube A B, close by the bottom ; and LECT. 

 another hole of the same size in the bottom 

 at C , then pour water into the tube, keeping 

 it full as long as you choose the holes should ~ cv 



run, and have two basons ready to receive 

 the water that runs through the two holes, 

 until you think there is enough in each ba- 

 son ; and you will find, by measuring the 

 quantities, that they are equal; which shews 

 that the water ran with equal speed through 

 both holes : which it could not have done, if 

 it had not been equally pressed through them 

 both. For, if a hole of the same size be 

 made in the side of the tube, as about f, and 

 if all three are permitted to run together-, you will find 

 that the quantity run through the hole at^'is much less 

 than what has run in the same time through either of 

 the holes C or e. 



In the same figure, let the tube be turned up from the 

 bottom at C into the shape D E, and the hole at C be 

 stopped with a cork. Then, pour water into the tube 

 to any height, as A g, and it will spout up in a jet EFG, 

 nearly as high as it is kept in the tube A B, by conti- 

 nuing to pour in as much, there as runs through the hole 

 E; which will be the case whilst the surface Ag keeps 

 at the same height. And if a little ball of cork G be 

 laid upon the top of the jet, it will be supported thereby, 

 and dance upon it. The reason why the jet rises not 

 quite so high as the surface of the water A g, is owing 

 to the resistance it meets with in the open air : for, if a 

 tube, either great or small, was screwed upon the pipe 

 at E, the water would rise in it until the surfaces of the 

 water in both tubes were on the same level ; as will be 

 shewn by the next experiment. 



Any quantity of a fluid, how small soever, may be The 

 made to balance and support any quantity, how great j^radox.' 

 soever. This is deservedly termed the hydrostatical 



