FERROMAGNETIC DISTORTION OF A WAVE 359 



sidiary loops only along a magnetization curve or a branch of a major 

 loop. 



Correlation of certain magnetic phenomena to a degree not heretofore 

 attainable is made possible by the preceding development. Among at 

 least some of these a qualitative connection has been well recognized. 

 Flutter and allied effects are known to be aspects of modulation, and 

 crowding is observed to accompany non-linear distortion quite gener- 

 ally. These features are related quantitatively by means of the 

 theory, and are linked with their single-frequency counterparts. It 

 thus becomes feasible to evaluate some of the more abstruse occurrences 

 in terms of readily understandable effects simpler in nature ; ultimate 

 in this direction is the use of steady state results to forecast the behavior 

 of transmitted speech or music. 



