80 BULLETIN OF THE UNIVERSITY OF WISCONSIN 



The preceding computation furnishes the absolute terms 

 of the following equations: 



+ 77.7 r + 2/3 = +39.08 



- 85.6r + 2/J = - 43.83 



- 98.3 r - 2/i = - 47.95 

 + 81.1 r - 2/i = + 43.13 



A least square solution of these equations furnishes the 

 values : 



r = + 0.506 (i =z - 0.600 



Prom numerous determinations with the spirit level, the 

 inequality of the pivots is known to be i — — 0".64, which, 

 combined with the value of A gives for the flexure the 

 Talue/= + 0".04. 



