Trans. Acad. Sci. of St. Louis. 



EXPLANATION OF THE PLATE. 



Plate IX.— Fig. A. Nodules in a fuse wire, giving evidence of striations 

 in the corpuscular nebula within the wire. 



Fig. B. Buckling of a fine wire due to balanced forces in electric 

 VN^aves. 



Issued July 3, 1912. 



