STUDIES ON THE DYNAMICS OF MORPHOGENESIS 287 



29 



28 



32 



35 



37 



39 



Figs. 24-28 Eighth pieces, fig. 24, first; figs. 25 and 26 third; fig. 27 fifth and fig. 

 28 seventh eighth. 



Figs. 29-39 Sixteenth pieces. The first sixteenth ranges between the extremes 

 of figs. 29 and 30: the second sixteenth is like fig. 30 or 31: the third and fourth 

 sixteenths range from fig. 30 to fig. 32: the fifth to the eleventh sixteenth pieces 

 are like figs. 33-36: the twelfth to the fourteenth range from fig. 37 to fig. 38: the 

 fifteenth and sixteenth are like figs. 38 and 39. 



