562 



TABLE in 



FIRST PERIOD CONSTAUTS FOR PRESSED TETRYL IN FREE WATER 

 Charge Weight: 0.500 lb 



Period from pictures agrees to + 2% 

 ** Period obtained from pictures — no piezoelectric record. 



TABLE IV 



FIRST PERIOD CONSTANTS FOR PRESSED TETRH, 

 Charge Weight: 0.500 lb 

 H « 39 f t 



-6- 



