STRUCTURE OF WO0D 3 &C, 
111 
Heat developed in the Combustion of various Species of Woods. 
Species of 
Mood. 
Lime - - 
Ditto - - 
Ditto - - 
Ditto - - 
Ditto - ^ 
Beech - - 
Ditto - - 
Ditto - - 
Ditto - - 
\Elm - - - 
Ditto - - 
'Ditto - - 
Ditto - - 
Ditto - - 
Ditto - - 
Oak - - 
Ditto * - 
| Ditto - - 
Ditto - - 
Ditto - - 
Ditto - - 
Ditto - - 
Ash - - 
Ditto - - 
Ditto - - 
Maple- - 
Service - - 
Ditto - - 
Cherry 
D i i tp - - 
Ditto - - 
fir - - - 
I Ditto - - 
Ditto - - 
■Ditto - - 
Ditto - - 
Poplar 
Ditto - - 
Hornbeam - 
Ditto - - 
Oak -- - 
Quality. 
Joiner’s dry-wood, 4 years old 
Ditto 
Same kind, highly dried over a chafing-dish. 
Ditto; • 
Same kind, rather less dried 
Joiner’s dry wood, 4 or 5 years old 
Ditto I 
'Num- 
bs r of 
the Ex- 
peri- 
ments. 
Quan- 
tity oj 
wood 
burnt. 
Same kind, highly dried over a chafing-dish. 
iDitto..... 
Joiner’s wood, rather moist... 
Joiner's dry-wood, 4 or 5 years old.. 
Ditto 
Same kind, highly dried over a chafing-dish.. 
Ditto ^ 
Same kind, dried and scorched in the stove. 
Common tire-wood, in moderate shavings... 
Same kind, in thicker shavings 5 leaving a 
residuum of charcoal. 
Ditto, in thin shavings 
Dilto, thin shavings, well diied in the air.... 
Joiner’s wood, very dry, in thin shavings. .. 
Ditto ......... 
Thick shavings, leaving 0 92 grains, of char- 
coal , .. 
Joiner’s common dry wood 
Same kind, shavings dried in the air.. ........ 
Same kind, highly dried over a chafing-dish. 
Seasoned wood, highly dried over a chafing- 
dish.. .............. . 
Ditto....... ....... .ditto.. ....... 
Same kind, scorched in a stove. ...... ......... 
Joiner’s dry wood....... .... ....... 
Same kind, highly dried over a chafing-dish 
Same kind, scorched in a stove 
Joiner’s common dry wood......... 
Shavings, well dried in the air 
Highly dried over a chafing-dish 
Dried and scorched in a stove 
Thick shavings, leaving much charcoal 
Joiner’s common dry wood • 
Same kind, highly dried over a chafing-dish. 
Joiner’s dry wood 
Ditto - 
n . $81*4 wood ) imperfectly 
Dl,edt0 } W6 water i, burned 
leaving a residuum of charcoal 
the combustion of... 
itly’) gram. 
1 , r o-8i 
, inf 075 
) 0*94 
No. 
U 
12 
13 
14 
3 5 
16 
17 
18 
19 
20 
21 
22 
23 
24 
25 
26 
| 27 
28 
29 
30 
31 
32 
33 
34 
35 
| 36 
37 
38 
39 
40 
41 
42 
43 
4 1 
45 
46 
47 
48 
49 
50 
51 
*52 
*53 
Heat. 
Commmu- 
nieated to 
the calori- 
meter, 
whose capa- 
jity was 
equal to 
2781 gram. 
Results. 
Quantity of 
•water, at the 
thawing tempe- 
rature, boiled by 
the ha»t develop- 
ed in the combuS- 
of Ub. of 
gr. 
Deg. 
lb. 
4’52 
io§ 
34°609 
4*55 
10* 
34*805 
4-06 
ID* 
39’605 
3’80 
10 
40*658 
5-57 
14 
38’833 
4-74 
io| 
33*817 
4’72 
10* 
33 '752 
5‘07 
12 
36*334 
4*43 
101 
36*184 
6*34 
11* 
27-147 
5’28 
lot 
30*359 
5*45 
lOf 
30*051 
4*70 
10* 
34-515 
5 28 
11* 
33-651 
4- 
8 
30*900 
4*83 
' 8 
25*591) 
6’ 40 
10* 
24748 
6’14 
1 Oi- 
26*272 
7*22 
ls 
29*210 
5*30 
10* 
29*080 
5’33 
10* 
19796 
6*48 
u 
26*227 
5*29 
10* 
30? 666 
37 8 
8* 
33 720 
5*23 
12 
35*449 
3*85 
9 
36*117 
4’49 
to* 
36*130 
4*30 
9 
32 ’337 
475 
to* 
33 339 
4’36 
10* 
36*904 
5* 
11* 
34763 
5 35 
10* 
30 322 
4*09 
9 
34* 
3*72 
9 
37*379 
4*40 
9* ] 
33*358 
4*51 
6* 
28*595 
4*13 
9* 
34*601 
8*95 
9* 
37*161 
498 
10* 
31*800 
o’ 01 
10* 
61*609 
6*14 
19* 
26-421 
4*o3 
8 
25*591 
671 
1 1 
25*917 
TheH 
