Method of deter mtnlng the Expence and Power of a Stream of Water. 463 



the quantity of water afforded may be afcertained by fufFerlng It to run through a notch 

 in a board, or a vertical hole of an inch fquare, according to the following table, which 

 Defaguliers fays he calculated from repeated experiments*. 



A TABLE of the Expence of Water through an Inch fquare Hole, and through a Cut an Inch 



wide and of different Depths. 



Inches below the 

 furface. 



I 



a 



3 



4 



5 



6 



7 

 8 



9 



10 



II 

 12 

 »3 



15 

 16 



17 

 18 



19 



20 

 21 

 22 



i3 



24 



25 



Expence of water through a 

 hole of a fquare inch at dif- 

 ferent depths, according to 

 the number of inchss in the 

 firft column. 



Expence of water through i 

 notch of different depths, 

 according to the number of 

 inches in the firft column 



A cubic foot of water weighs very nearly 624- pounds averdupois, and an hogfliead of 

 water weighs about 550 pounds. 



• Courfe of Experimental Pliilofophy, ii, iij, 

 3 O 2 



la 



