162 Trans. Acad. Sci. of St. Louis. 
EXPLANATION OF ILLUSTRATION. 
Plate XXXVI; Figs. 1 and 2. Table for magnetic ageing 
Plate XXXVII; Fig. 1. Steamer, Blast of Fog-hor 
a XXXVII; Fig. 2. Wooden trough sake: ‘col ellis of dyna- 
mit 
Riis XXXVIII. Magnetic effect of a flame. 
Plate XXXIX. Magnetic effect of a flame. 
Plate XL. Magnetic effect of an explosion. 
Pats XLIII Magnetic effect of sidid wasek. 
Issued hig: 28, 1916. 
