(7) Aviqiavawuad 
Trans. R.Dubl.Soc. Ser. Il.,Vol. VII. . Plate I. 
1900 ALUMINIUM z es 
Les oe i 
1800 Lea wely atrectel 
/ 
1,700 (let Siugo i 4 
=(Si- 
| 
Sag oeses 
=>; 
es 
12 14 16 18 20 22 24 26 28 30 32 
West, Newman, hth 
PER-CENT OF ADDED ELEMENT. 
