6 Stansfield, Preparation of Barium. 



only 14 grams magnesium and 48 grams barium peroxide, 

 but the reaction was violent and shattered the bell-jar. 



I hope to study other methods of preparation, more 

 particularly the electrolysis of barium compounds. 



The above work was carried out in the Electro- 

 chemical Laboratory of the Owens College. 



EXPLANATION OF PLATE 



Fig. 1 . Vertical section of crucible. 

 „ 2. Horizontal section through AB. 



C. Crucible. 



D. Lid. 



E and F. Brass plates. 



H. Bolts. 



J. Jacket for crucible. 



K. Asbestos millboard. 



L. Aluminium wires 



M. Platinum wire. 



N. Insulated copper wires. 



O and P. Iron vessels. 



R. Desiccator. 



S. Bed-plate of desiccator. 



