1894.] on the Newtonian Constant of Gravitation. 377 



opposition of circumstance, knowing that by my discovery of the 

 value of the quartz fibre, and my development of the design of this 

 apparatus, I had, for the first time, made it possible to obtain the 

 value of Newton's Constant with a degree of accuracy as great as that 

 with which electrical and magnetic units are known ; though I have 

 up to the present succeeded to an extent which is greater, I believe, 

 than was expected of me, I am not yet entirely satisfied. I hope to make 

 one more effort this autumn, but the conditions under which I have 

 to work are too difficult ; I cannot make the prolonged series of experi- 

 ments in a spot remote from railways or human disturbance ; I cannot 

 escape from that perpetual command to come back to my work in 

 London ; so after this I must leave it, feeliug sure that the next step 

 can only be made by my methods, but by some one more blest in this 

 world than myself. 



[C. V. B.] 



