16-7 
242 Proceedings of the Royal Society of Edinburgh. 
[Sess. 
o _o _o £ 
15 15 15 — 
CN lO 00 
A <N 
O 
o 
a 
c 
o 
00 
o 
o 
r- 
o 
o 
CD 
o 
o 
LO 
o 
o 
St 
a3 
s_ 
3 
S- 
a 
o E 
O a> 
CO I- 
o 
o 
CN 
step CM CD O st GO <N 
CD LO lbs}- <3- CO CN CM 
■sn|npo|/\| 
Fig. 21. — Platinum. 
