Vibrations of a Stretched Indiarubber Cord. 349 



i 

 is 



t d. fair 1 ""* 



^ZMnqtfL in. cm4 



I 



'03 



'02 



•015 



T 

 > 



•01 



'005 



65 



10 15 20 25 80 35 40 45 50 55 



SO 



75 



70 



