INVKSTK;ATKI> BY THK MFTHOD OF JET VIBRATION. 



363 



TABLE TIL 



might have influence upon it. It is clear that both these influences are dependent 

 upon the velocity of the "jet-catcher." 



In order to investigate these questions I have made several series of experiments, 

 one of which is given in Table IV. The result is, as can be seen, within wide limits, 

 independent of the velocity of the "jet-catcher." 



Further, I have compared the "jet-catcher" used here with another for which 

 L = Li + Lj = 7 '9030 cm. The difference between the results of a series of experi- 

 ments on the same jet was only 0*06 per cent. 



TABLE IV. Water Jet. Velocity 273-1 cm./sec. Diameter 1-3415 mm. 



7. After the above there can hardly be any doubt that this method for the 

 determination of the sectional area of a thin jet gives very trustworthy results, and 

 that by this means we have a convenient method of carrying out several investi- 



.3 A 2 



