GAS-LIGHT.
571
The relative value of these productions of ga? is as follows, viz. :lh at ^GOths per hour nearly (or 1-5916 accurately), and equal to 203 candles;
e 11,120 feet would be equal to and last as long as 1597 candles, ot 2661 lbs. ofcandles. r 5 6
92nn*r* at ^J-10ths per hour (or 1-2375 accurately), and equal to 236 candles; the0 feet would be equal to 1949 candles, or 3244 lbs. candles.
1 °w 2661 lbs. of mould candles, at 7s. 6 d. per b dozen lbs., will costSZ. 6s. 4§cZ., whilst
324s lbs. of do. do.
do.
do.
10/. 3s.
_ _ —. —. at 7s. 6d. per
showing the value of 4-hour charges over 6-hour charges; and of 9,200 cubic feet0V N f G,120 cubic feet.
d| tJg O ^'~~^00 cubic feet of Wigan cannel coal gas are equal in illuminating power to 859 l*6th lbs. of can*g as ’ .I 116 ** at 7s. Od. per dozen Tbs. will cost '251. 10s. 5jrl. It is also found that any burner with superior1 consume only about half the quantity it would do with common, gas.
Prod^ ^ x P er tment i May 30 lh. —Cannel and Cardifl coal mixed \ and |, together 112 lbs.,>n >? Cet * ^60 feet of gas; 2 bushels of coke of good quality; increase of coke over coalA v easure > a ^ out 30 per cent.; loss in weight, 41 lbs.; coke weighed 71 lbs., no breize.p er t ra § e quantity of gas made from the charge (4 hours), 4-1 cubic feet per lb., or 9-200
fthtminaling power. —At the end of the first hour.
Candles,
t73 or 2-49
distance of candle from ) „, Q < Consumed per hour, single
shadow - - -) c jet, 4 inches high
-^-t end of 2d hour, do. 70 or 2-72 Do. do. do.
At end of 3d hour. This gas very indifferent. ,
-Average of the three - 70 or 2-72 Do. do. do.
Cubic feet.
• 12-10ths.lli-lOlhs.
lli-10ths.
gravity 3-44; 5 feet per hour, with a 20-hole argand burner, equal to 14-66
Specific
candie s .
Pro? May 31st.—Carlisle coal, 112 lbs. produced 410 feet of gas; other
cts > same as in former experiments with this coal, but heat very low.
Ut ninating power and produce of gas .
'Average of this gas: specific gravity, 540;distance of candle from, shadow, 55 inches,or 4*4 candles consumed per single jet,
4 *o ft.
f 1st hour 120 cubic feet
J 200
j 3 d 90
14th 100
for^ s P°ssible, from the superior quality of this gas, that a little of the cannel gas madeand P art icular purpose, may have got intermixed with it in the experimental gasholderj^ a Pparatus.
of ditt, ar ' et ^ °** °^ er experiments were tried on different qualities of coal, and mixturesth e ° 5 l . 00 tedious to insert here, though extremely valuable, and all tending to showp 0rt P eilor value of gas produced at short over long charges; and also showing the im-■ty^ch e and value of coal producing gas of.the highest illuminating power; amongj e eannel coal procured in Lancashire , Yorkshire , and some other counties ofjj* nu and Wales , and the Parrot or splent coal of Scotland , stand pre-eminent.
® Xa cLl v a ?lt the foregoing experiments the same single-jet burner was used; its flame in all instancesTh/ n ches high.
^’■yintr w hen drawn from the retort was slaked with water, and after allowing some short time forS> was weighed.
9-10ths of a cubic foot per hour. 20-holeargand burner, 4 feet per hour, equal to21*33 candles.
Tabli
■ E of the number of hours Gas is burnt in each month, quarter, and year.
of Bur n i ns
<4t ck e
7
to, ‘sotMor, “"&from
s
V
.a
E
V
V
V
>-
a
£•
si
s
A
ej
. quar.
rt
C*
s. quar.
S3
U
>*. =
*~s
-S
4)
72
“
O
5
fc
s
a
<-i
£
IS
■S'
| Maj
G
D
is
5
*
__
_
2
31
62
80
65
33
4
2
173
102
277
—
14
22
62
92
111
96
61
31
4
_
—
4
36
265
188
493
s
—•
40
52
93
122
142
127
89
62
28
4
_
32
92
- 357
278
759
71
102
82
124
152
173
158
117
93
58
29
8
95
166
449
368
1078
44
112
155
182
204
189
145
124
88
fift
38
186
258
541
458
1443
75
133
142
180
212
235
220
173
155
118
91
68
277
350
633
548
1808
«
217
164
172
217
242
266
251
201
186
148
122
98
368
442-
725
638
2173
307
345
421
473
527
512
411
382
295
249
195
732
869
1421
1305
4327
"O V
16
48
80
110
137
137
98
71
28
2
_
30
64
327
306
727
‘
•—
18
49
80
106
106
70
40
a
.
3
18
235
216
472
U)
■—
—
18
50
75
75
42
9
_
_
143
126
269
—
20
44
44
14
64
58
122
&