the Maximum Density of Water. 

 Series 1. 



45 



We could hardly have anticipated more satisfactory results 

 than those of the above table. They show clearly that while 

 water at a temperature of 40°'905 is lighter than water at a 

 temperature of 37°'368, water at 40°-7ll is heavier than water 

 at 37°-3l7 : in other words, that SQ^-ISG is above, whilst 

 39°*014 is below the maximum point. By drawing a curve 

 from the results, we find that the exact point of maximum 

 density indicated by the above series of observations is 

 39°-102. 



During the next series of observations the temperature of 

 the laboratory was about 41°, which occasioned a gradual in- 

 crease of the temperatures of both vessels. 

 • 



Series 2. 



The point of maximum density indicated by this second 

 series of observations is 39°'078. 



Series 3. 



