VIII 



In this case n was found = = 2 and for each x Ihc 

 corresponding X was calculated. When the values of 

 X were marked out as ordinates for the different va- 

 lues of t, it was very easy to draw a straight line rather 

 near to the points thus defined. 



100 



50 



50 



Having drawn the straight line the constants of its 

 equation could be read directly on the figure, Cj being 

 the segment of the ordinate axis for t = and c being 



In this instance 



10 

 was found 



1,109 

 /,8Jo. 



In the following table I have given the different va- 

 lues of x as observed and as calculated from the equa- 

 tion of the straight line. 



5 



