44^ TIME LOST IN CHANGES CH. XIX 



pose he was furnished with an official time-piece 

 or large watch. A number of these Time-bills are 

 printed in Harris's Coaching Age, pp. 277-292. 



The following Table shows how much the driving- 

 speed has to be increased to make up the time lost 

 at changes, with seven-mile stages : — 



At 9 miles an hour, i mile in 6 min. 40 sec. 

 7 miles in 46.6 min., no stop = 9.0 ms. per hour 



7 .. .. 45- 6 ■• ' min - sto P = 9- 2 

 7 .. .. 44-6 ,, 2 ,, = 9.4 



7 .. ,. 43- 6 .. 3 .- .. = 9- 6 

 7 ,, ,, 42.6 ,, 4 ,, ,, = 9.9 



At 10 miles an hour. A mile in 6 minutes. 

 7 miles in 42.0 min., no stop = 10.0 ms. per hour 



7 ,, ,,41.0 ,, 1 min. stop =10.2 ,, ,, 

 7 ,, ,, 40.0 ,, 2 ,, = 10.5 



7 .. .. 39-° -- 3 .. = IO -8 



7 .. -- 3 8 -° .. 4 .. >> = u-o 



At 11 miles an hour. 1 mile in 5 min. 27 sec. 

 7 miles in 38.15 min., no stop =11.0 ms. per hour 



7 .. -- 37-15 " 1 min. stop = 1 1.3 

 7 ,, ,, 36.15 ,, 2 ,, ,, = 11. 6 

 7 •> >> 3 5 • ' 5 " 3 >> >> =12.0 ,, ,, 

 / n ' » j4* * 3 '' 4 >' * * — 3 > > » » 



The importance of making quick changes is evi- 

 dent, and also of not losing time by stopping for the 

 purpose of altering couplings or of changing the 



bittinor- 



The horses intended for the road are usually 

 brought together at one point, as they are bought, 

 and tried so as to arrange them in teams ; it is an 



