PROFESSOR HEDDLE ON THE MINERALOGY OF SCOTLAND. 
Silica, 
Alumina, 
Ferric Oxide, 
Ferrous Oxide, 
Manganous Oxide, 
Lime, 
Magnesia, 
Potash, 
Soda, 
Water, 
Silica, 
Alumina, 
Ferric Oxide, 
Ferrous Oxide, 
Manganous Oxide, 
Lime, 
Magnesia, 
Potash, 
Soda, 
Water, 
Silica, 
Alumina, 
Ferric Oxide, 
Ferrous Oxide, 
Lime, . 
Magnesia, 
Potash, 
Soda, 
Water, 
Biotite. 
Oxygen. 
39° 35 20)299' . 20.99 
16°46 7-67 — 
*38 sb 
ess 2°28 
47 
1°35 
18°98 7°59 \14°95 
8°25 CA. 
ev °08 
3°5 3°1 
Haughtonite, Scottish. 
Oxygen. 
35° 93 19°16 EO 1G 
18:06 8°41 9:78 
4°55 1:37) 
18 - 06 3°8 
“Si “18 
1-49 * 42 
9-07 3°63.) 12°67 
8°49 1°44 
6 OR *29 
3,24 ya 
Haughtonite, Foreign. 
Oxygen. 
35 °9 OD Uo Ls 
17°08 sib 10°07 
7°04 Ziel 
Loe Wy, 3°36 
1°65 "47 
10°34 4°14 
0G, eile Bel ones 
164 49 
85 = 2-75 
geld 
~ 10 
pe i) 
aban 
