?).' 



57-7 



Proceedings of the American Academy of Arts and Sciences. 



Vol. 57. No. 7. — April, 1922. 



A TABLE AND METHOD OF COMPUTATION OF ELECTRIC 

 WAVE PROPAGATION, TRANSMISSION LINE PHE- 

 NO:\IENA, OPTICAL REFRACTION, AND INVERSE HY- 

 PERBOLIC FUNCTIONS OF A COISIPLEX VARIABLE. 



By George W. Pierce. 



