Iron . 97 
’Table of the component parts of one English pound avoir- 
dupois, or seven thousand Troy grains of the following 
varieties of Wood, ^ 
Water, 
Hyd. gas, 
Garb. acid 
Carbon 
Ashes 
Colour and Degree of Saturation of the 
Alkaline Principle. 
Oak - - 
Ash - - 
Birch - - - 
Norway Pine 
Mahogany - - 
Sycamore = - 
Holly - - 
Scotch Pine - 
Beech - - 
Elm 
Walnut - 
American Maple 
Do. Black Beech 
Laburnum - - 
Lignum Vitae - 
Sallow - - - 
Chesnut 
5382.6 
5688.2 
5650.2 
5630.9 
5147.0 
5544.0 
5524.4 
5816.7 
5537.3 
5576,6 
5496.5 
5553.2 
5425.9 
5196.4 
5083.0 
5626.0 
5341.3 
1587.8 
1258.0 
1224,4 
1344.3 
1784.4 
1381.4 
1394.3 
1151.9 
1395.9 
1370,2 
1446.4 
1393.1 
1301.8 
1721.0 
1889.0 
1294.8 
1629,6 
~29,6 
53.8 
125,4 
24.8 
68,6 
74.6 
81.3 
31.4 
66.8 
53.2 
57.1 
53.7 
72.3 
82,6 
35.0 
79.2 
29.1 
Grey, sharply alkaline. 
Whitish blue, do. 
Brownish red, do. 
Brown, not in the least alkaline 1 . 
Grey, sharply alkaline. 
Pure white, weakly, do. 
Do. sharply, do. 
Brown, perceptibly do. 
Greyish white, sharply do. 
Grey, partially do. 
Pure white, light as down, weakly do?. 
Dark grey, sharply do. 
Brown, do 
White and grey, partially alkaline,, 
Grey, sharply do. 
Light grey, do. 
Grey, do. 
Parts in 100, 
Water, 
Hyd. gas, 
Carb.acid 
Carbon 
Ashes 
Colour, Nature, Compactness of the 
Charcoal. 
Oak - - - 
Ash - - - - 
Birch - - - 
Norway Pine - 
Mahogany - - 
Sycamore - - 
Holly - - 
Scotch Pine - 
Beech - - - 
Elm - - . - 
Walnut - 
American Maple 
Do. Black Beech 
Laburnum - - 
Lignum Vitae - 
Sallow - - - 
Chesnut - 
76,895 
81,260 
80,717 
80,441 
73,528 
79,200 
78,920 
83,095 
79,104 
79,655 
78,521 
79,331 
77,512 
74,234 
72,64-3 
80,371 
76,304 
22,682 
17,972 
17.491 
19,204 
25.492 
19,734 
19,918 
16,456 
19,941 
19,574 
20,663 
19,901 
21,455 
24,586 
26,857 
18,497 
23,280 
‘j,42o 
0,768 
1,792 
0,355 
0,930 
1,066 
1,162 
0,449 
0.955, 
0,761 
0,816 
0,768 
0,033 
1,180 
0,500 
1,132 
0,416 
Black, close and very firm. 
Shining black, spongy, moderately firm, 
V elvet black, bulky and do. 
Shining black, bulky and very soft. 
Tinged with brown, spongy, and firm. 
Fine black, bulky and moderately firm. 
Dull black, loose and bulky. 
Tinged with brown, bulky but pretty firms 
Dull black, spongy, but very firm. 
Fine black, moderately firm. 
Dull black, texture close, body firm. 
Dull black, texture close, moderately do* 
Fine black, compact & remarkably hard 
Velvet black, do. 
Greyish, resembles pit coal, coaks, do. 
Velvet black, bulky, loose and soft. 
Glossy black, compact and firm. 
* Dr. Watson 1 Essays, 132, says that I06lb.* of dry pealed oak« 
yielded 19 ounces of ashes : these ashes yielded 1 ounce and a 
quarter of saline matter. Hence 1 ton of potash requires about 
1300 tons of dry, or about 1800 tons of erreenoak* 
N 
