310
MOTIVE POWER ON
mice upon Rail-roads will be proporlionablyincreased.
Having thus given a few hasty remarks onthe comparison of Rail-roads with Canals inthe use of animal power, 1 shall also give abrief comparison between the use of mechani-cal power on Rail-roads, and animal pow er oncanals ; and here, as in every other case, w herethe two species of action come into competi-tion, we shall find the mechanical power out-strip the animal in general economy.
Table of the relative performances of horsesdragging boats on canals; and loco-motiveengines, dragging carriages upon Rail-roads.The former supposed to be loithout locks, andthe latter horizontal.
TABLE X.
Velocity in miles per hotr. |
*
O
-o
V
V
s
o
u
Ip
'Z
&
Distance in miles, being that vhich ahorse travels in a day.
Number of horses required to performi the work upon a canal, from Tible IX.
1
| Time in hours occupied by lorses in
| travelling 20 miles, at the respective
velocities of column 2.
j Distance in miles which a loorootive
engine would travel in that tine, upona rail-road, going at the rate of 6 milesan hour.
Rates of distance traversed in .he same! lime by loco-motive engines upon a
1 rail-road, and horses dragging boats in
1 a canal.
Number of horses' work whici a loco-motive engine will perform, travellingat the rate of 6 miles an hour, in thetime-column 5.
\\is'l 1
y 5 Vs V £
|p«
U o'- 3
& g.s
V—* _
•214
■g «g5 «?*
.273'
|§
Cm v
2
800
20
l.«6
10
60
3: 1
4
1: 4
3
800
20
4.5
61
40
2: 1
0
1 : 9
4
800
20
10.7
5
30
1.5 : 1
16
1:16
5
800
20
21.2
4
24
1.2 : 1
24
1 :24
6
800
20
30.
33
20
1 : 1
36
1:36