316 Review of Prof. Johnson’s Report on American Coals. 
FOREST IMPROVE- 
Third trial—upper damper 4 inches open; air 
TEMPERATURES OF THE : a a 
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ovr 4/5 }E§) | ee be a =] “ = te es 
by | aie elaiw| 3 S a S = 5 
e{2e | elelalfi = | 28fjeh2{ 3 
Elsie tsizieie) 3) 2 i213 /)3] 2 
ait Sleai\l<| m m i> |e | 2 S 
h. ™. 
A. M. 
‘Aug. 7} 4 45 (80 |7 80} 184} 80} 30:11 | 0-349 | 7:06} O13} ~ - 
6 07 |31-5\77 | 154 80, 225] 79| 30- 27 0-20 | ~ | 104-00 
6 37 i 77 158 80 9 80} 30-10 0-552 505] 0:18 | - 107-00 
7 00 |81 |77 | 15 232 81) 30-1 4,017 | ~- | > - 
7,30 \82 (77 | 16 78) 226| 82/ 30-10 | 0-503 0:20 | 164| - 
8 00 |82:5}77:5} 160, 78| 226] 82} 30-10 | 0512 | 5-45, 0-20} ~ ws 
8 30 oa 8 162 222 “78 227 83; 30-10 | 0-521 5:35 O21 | = 104-25 
165| 244) 78 84] 30-11 | 0-523 | 5-34) 0-21 - 
be iB | oh 85 0 2 8 Bh See oe oe | | 
1 ay "32 ~ 
10 30 [88 |79 | 189 229 11 | 0:535 | 5-22) 0-34 | 991 | 100-25 
11 00 |90 {go | 186] 254) 79} 229) 86] 30-11 | o-5e4 | 5-33, 0-22 [1249 | = 
11 30 |90 js0 | 198] 260. 79| 230! 87| 30-11 | 0-535 | 5-221 0-23 1419 | - 
PM. 
0 00 80-5] 208 7a| 2301 87! 30-10 | 0-527 | 5°30, 0-19 ee 10475 
0 30/94 Igo | 224 30-10 | 0°521 | 5°36 0-18 '2 - 
100 [88 |78 | 225 79| 231) 88) 30-10 | 0-542 | 5:15] 0-20 (225 - 
1 30 |91-5\79 | 235| 246 79| 230 87| 30-07 | 0-530 | 5-27] 0-16 2592 | 111-00 
2 00 |94. |g0 | 249 230 88) 30-08 5-20, 0-19 3014) - 
2 30 95 |s0 | 25 - 83} 30-08 | 0-523 | 5-34, 0-18 3334| - 
3-00 |93 j81 | 264 | 89} 30-06 | 0-523 | 5:34] 0-18 3539 | 118-75 
3 30 (92 |81 | 275 81 ‘ei 30-06 | 0:530 | 5-27) 0-18 y ~ 
4 00 [94 |31 | 288 | 81 a 82] 30-06 | 0-535 | 5-22, 0-18 4215| - 
4 30 |92 j81 250, 84) 230 89| 30:05 | 0-595 | 5:32] 0-18 foes 115-00 
5 00 {92 180 | 316| 248' 84) 230! 8a 30-05 | 0-523 | 5-34] 0-17 '4783 |  - 
5 30 r 9, 84| 230, 87| 30-05 | 0-527 | 5:30) 0-18 [5027 | 101-50 
6 00 wn 343 a 230) '87| 30-05 | 0550 | 5-07] 0-17 15445 | - 
6 30 {92 ie 382| 228 84} 229) 86} 30-05 | 0-533 | 5-24| 0-18 (5973 | - 
‘ A. M. 
Ang. 8 5 20 [80 77 | 236 84] 225) 81] 30-05 | 0-497 | 5°58] 0-14 [5980 | - 
6 05 [82 77 | 224) 206 84] 211! 81) 30-06 | 0-348 7071 015 (7567 |= 
ge of steady action from 10h. 10m. a. mM. to 5h. 30m. Pp h, 20m., pa Ses 14 
sets of observations; coal supplied to grate, 551 lbs. ; nulls to battle 4,204 lbs. ; water 
tol - coal, during said period, 7-629. 
