148 



Experiments to determine 



TABLE II. 



General Results of the Experiments in Table I. on tht 

 Force of Fired Gun-powder. 



The agreement of the elasticities computed from the 

 theorem ;v' + °°°°'*-^ ^= JVj with the actual elasticities as 

 they were measured in the experiments, may be seen in 

 the foregoing table ; but this agreement may be seen in 

 a much more striking manner by a bare inspection of 

 the figure 11, Plate VI.; for the line A D in this figure, 

 having been drawn from the computed elasticities, its 

 general coincidence with the linei\. C shews how nearly the 

 computed and the actual elasticities approach each other. 

 And when the irregularities of the line A C (which, as 



