HYDROSTATICAL TABLES. 



151 



LECT. 

 V. 



As 1 is to 0.785399, so is the square of the diameter 

 to the area of the circle. And as 1 is to 0.785399, so 

 is the square of the diameter multiplied by the height 

 to the solidity of the cylinder. By this analogy, the 

 solid inches and parts of an inch in the tables are cal- 



