194 
Proceedings of the Royal Society of Edinburgh. 
II. — Determination of Nitrogen. 
No. of Shale. 
Weight 
taken. 
Nitrogen 
found. 
Nitrogen 
per cent. 
Nitrogen 
per cent. 
(Average.) 
1(a) 
•9984 
•004766 
0*48 
w 
1*0008 
•005057 
0-51 
0*49 
2 (a) 
1-0025 
•005538 
0-55 
(b) 
*9969 
•005104 
0-51 
0-53 
3(a) 
1-0046 
•006161 
0 61 
• (6) 
•9999 
005989 
0-60 
0*61 
4 (a) 
•9976 
•006810 
0-68 
(b) 
1-0015 
•006569 
0-66 
0*67 
5 (a) 
1-0019 
•006746 
0-67 
W 
1-0020 
•007100 
0-71 
0-69 
6(a) 
1-0017 
•005925 
0-59 
(6) 
1-0020 
•006166 
0-62 
0-60 
7(a) 
1-0031 
•006182 
0-62 
(&) 
1-0033 
•006907 
069 
0*65 
8 (a) 
1-0011 
•005361 
0-54 
(6) 
•9971 
•005313 
0-53 
0*53 
9(a) 
•9971 
•006585 
0-66 
(b) 
•7123 
•005071 
0-71 
0*68 
10 (a) 
•9985 
•006311 
0-63 
• • • 
(6) 
1-0039 
•006327 
0-63 
0-63 
11(a) 
•9984 
•007986 
0-80 
. . . 
(b) 
1-0009 
•008147 
0-81 
0-81 
12 (a) 
1-0004 
•007736 
0-77 
• . . 
W 
•9946 
•007223 
0-73 
0-75 
13 
1-0001 
•01233 
1-23 
III. — Determination of Sulphur. 
No. of Shale. 
Weight 
taken. 
Barium 
Sulphate 
found. 
Sulphur 
per cent. 
Sulphur 
per cent. 
(Average.) 
1 (a) 
•997 
•0682 
0-94 
... 
(b) 
1-005 
•0659 
0-90 
0-92 
2 (a) 
1-004 
•0871 
1-19 
(b) 
•998 
•0860 
1-18 
lib 
3(a) 
1-005 
•1277 
1-75 
(b) 
1-005 
•1262 
1-73 
1-74 
4(a) 
1-003 
•0953 
1-31 
(b) 
1-003 
•0953 
1-31 
1*31 
5 (a) 
1-006 
•0992 
1-36 
(b) 
1-006 
•0990 
1-36 
1*3*6 
6(a) 
•998 
•1982 
2-73 
(6) 
1-000 
•1970 
2-71 
2*72 
7(a) 
•998 
•0914 
1-26 
(b) 
•997 
•0912 
1-26 
1-26 
8 (a) 
1-002 
•0382 
0-52 
<b) 
1-004 
•0395 
0-54 
0-53 
9 (a) 
1-005 
•0589 
0-81 
(b) 
1-004 
•0583 
0-80 
0*80 
10 (a) 
1-004 
•0196 
0-27 
(b) 
•999 
•0213 
0-29 
0*28 
11 (a) 
1-002 
•0285 
0-39 
(b) 
•997 
•0336 
0-46 
0-43 
12 (a) 
•997 
•0511 
0-70 
(b) 
1-002 
•0483 
0-66 
0*68 
13 
1-002 
•1716 
2*35 
[Sess. 
