45 

 0.14 



114 



0.35 



230 

 0.70 



386 

 1.18 



581 

 1.78 



Figure 16. A three-dimensional phase during growth (the mid-third 

 of test section in experiment 51) . Upper and lower 

 numbers by each photo give n and (D/a)n, where n is the 

 number of cycles since the start of ripple growth. 



49 



