ee ee ad 
and the Products of its Transmutation. 143 
- Oxygen Ratio. 
RO: R, Os Fag 
1. Meionite, (Ca0,) SiO, + 2 Al, 0, SiO, . sshijv: : 8 
2. Scapolite, (CaO, NaO,) 2 Si O, a! 2 Al, 0, Sie ys iks: : 7 4 
3. Wernerite, : 
as | (CaO,NaO,)3Si0, +2Al,0,Si0,=1:2 :5 
am fae. \ 8(Ca0,Na0,) Si0, +5.Al,0,Si0,=1 : 25: 4 
S Nuttalite, .... ROSiO, +Al,0,Si0,.. « ) =1: 8.26 
The essential constituents of the original species appear to 
be :— 
Soda. 
Lime. 
Alumina. 
Silica. 
II. In the transmutation of Wernerite, the following 
changes take place,— 
Introduced. Abstracted. 
1. Potash, (3) 5. Soda, (6) 
2. Magnesia, (3) 6. Lime, (5) 
3. Lime, (1) 7. Alumina, . (4) 
4, Peroxide of iron, 
SC 
The quantity of silica is relatively increased or diminished ; 
whether any absolute alteration takes place, is difficult to 
determine. 
These changes take place together in various ways :— 
1, 4, 5, 6, determine the 
conversion into : ; mica, 
1, 2, 4, 5, 6, We. : ‘ red and yellow Wernerite. 
2, 4, 5, 6, j ; : black Wernerite. 
3,4, 5, . ; i ’ epidote. 
G7, ‘ : , Wernerite with 92°7 prt SiO, 
‘The small numbers in brackets indicate the probable rela- 
tive frequency of the changes. 
B. H. P. 
