ON kAil-roads.TABLE 111.
T3 1
Table of the line of road bn Which one horsfe travels■with six loaded carriages, eich weighing 8,.'5401bs. similarto Experiment IV. No. 1.; and returns with six empty car-riages, each weighing 2,6041bs. same as Experiment IV.No. 7.—Edge-rail, Killingworth Colliery Rail-road, frictionloaded carriages 401bs., empty carriages 141bs.
Respective dis-tances in feet.
Deecent of planein inches*
Gravity of sixloaded carriagesdown the planein lbs.
Total resistance,being the ditfev-lence between the
1 friction and gra-
1 viiy in lbs.
Gravity of the 6empty carriagesup the planein lbs.
Total resistance,bejng the gra*vity and frictiontogether in lbs.
330
6.5
84
156
25
109
330
12.
155
85
47
131
330
16.5
213
27
65
149
330
18.5
239
1
72
156
330
14.
181
59
55
139
330
17.
219
21
67
161
330
18.
232
8
71
155
330
30.5
394
.
120
204
330
44.
569
.
173
257
330
25.5
329
100
184
330
2.
25
215
7
91
330
8.
103
137
31
115
330
11.
142
198
43
127
330
24.
310
94
178
330
23.5
304
#
92
176
330
0
0
240
0
84
330
14.
181
#
55
139
330
40.
517
157
241
330
33.5
433
,
132
216
108
9 .
194
46
59
143
On examining the above Table, it will beseen that the average resistance with the loadis about 60 lbs. ; and in returning with theempty carriages 157 lbs., the mean 109 lbs.—The distance 2156 yards.
The horses were very large and heavy ; they