266 RALPH S. LILLIE AND EARL N. JOHNSTON. 



DESCRIPTION OF PLATE III. 



FIG. ii. Large Fe-ferricyanide filaments showing the effect of dropping water 

 in the solution just beyond the growing end of the filaments. The striae were 25 

 to 50 microns apart before the change of concentration. 



FIG. 12. Zn-ferricyanide filaments, and saccules formed at the surface of the 

 solution. 



FIG. 13. Large striated Zn-ferricyanide structures. The copper wire is shown 

 wcund about the Zn-strip. 



FIG. 14. Zn-ferricyanide filament showing the irregularity of growth at the 

 surface of the solution and the general tendency to branch. 



FIG. 15. Part of a large, branching Zn-ferricyanide filament on the surface of 

 the solution. Photograph after 24 hrs., in the solution. 



