326 
ANALYSES 
s 
12. Black Birch (Betula lenta). 
Tree slightly hollow at the base. Diameter eight feet from the base, 17J inches. Mean thickness of the 
bark, } inch. Number of layers eight feet from the base, 235. Average thickness of each layer, 
0-03504 of an inch. Growth quite uniform. From 80 to 85 of the outside layers were taken for out¬ 
side wood: thickness 3J- inches. 
Potash .... 
Bark. 
2-59 
Outside wood. 
7-34 
Heart wood. 
8-25 
Soda ..... 
1-87 
12-93 
10-30 
Chloride of sodium 
o-io 
0-12 
Sulphuric acid ... 
9-537 
2-61 
4-12 
Carbonic acid ... 
37-156 
24-06 
26-44 
Lime - 
41-446 
31-14 
34-86 
Magnesia .... 
2-32 
8-0 
2-64 
Phosphate of peroxide of iron 
0-20 
1-4 
1-40 
Phosphate of lime 
10-20 
16-4 
19-89 
Phosphate of magnesia 
none. 
0-6 
0-51 
Organic matter ... 
0-44 
3-2 
4-39 
Insoluble silica ... 
0-40 
1-6 
1-90 
Coal ..... 
0-30 
106-459 
109-68 S. 
114-82 S 
13. Yellow Birch (Betula excelsa ). 
Tree sound. Diameter four feet from the base, 21} inches. Average thickness of the bark, | inch. Num¬ 
ber of layers four feet from the base, 184. Average thickness of each layer, 0-0557 of an inch. 
Potash 
Bark. 
0-917 
Outside wood. 
4-237 
Heart wood. 
5-60 
Soda ... 
- 
0-543 
12-36 
9-54 
Chloride of sodium - 
- 
2-369 
0-12 
Sulphuric acid - 
- 
3-021 
6-87 
1-92 
Carbonic acid - 
- 
33-25 
18-857 
36-69 
Lime ... 
_ 
48-22 
27-50 
22-33 
Magnesia - 
- 
2-40 
8-96 
9-76 
Phosphate of peroxide of 
iron, ) 
2*30 
1-41 
Phosphate of lime 
- 
9-70 ) 
18-50 
15-35 
Phosphate of magnesia 
Organic matter * 
- ) 
) 
1-50 
5-00 
0-80 
Insoluble silica - 
. 
1-60 
0-90 
Coal 
- 
1-00 
0-30 
101-94 
107-304 
104-60 
