PROPERTIES OF WATER 



43 



a cross-section of 1 square inch and a height of 1 foot will equal 



62 4 



'- or 0.43 pound, so that at sea level water will rise to an aver- 



14 72 



age height of ' or 33.9 feet in vacuum. 

 .4o 



The barometric pressure in inches is equal to the pressure per 

 square inch divided by 0.4908. 



In Table XIX are given the relations of altitude to barometer 

 and atmospheric pressure. 



TABLE XIX 

 RELATIONS OF ELEVATION TO BAROMETER AND ATMOSPHERIC PRESSURE 



Measurements. Conversion Table XX gives the most com- 

 mon units in which water is measured. 



