CH. XIX LENGTHS OF STAGES 443 



stages, and supposing for simplicity that each stage 

 requires one hour, the arrangement will be as 

 follows : — 



Hours — 10 11 12 1 2 3 4 5 6 



Teams— A B C D G H I J 



Hours — 6 5 4 3 2 1 12 11 10 



Teams— A B C E F H I J 



Team A 10 to 11 ) Team F 1 to 2 rests all day 



v - rests 6 hrs. 



5 to 6 J ,, G 2 to 3 rests all day 



1 to 12 1 ,, H 12 to 1 ] 

 > rests 4 hrs. 



4 to 5 j 3 to 4 J 



2 tO I I , , 1 I I to 1 2 1 



■ rests 2 hrs. 



2 to 4 J 4 to 5 J 



1 to 2 rests all day ,, J 10 to 11 1 



,, E 2 to 3 rests all day 5 to 6 j 



This requires ten teams, four of which, D, E, F, 

 and G, do only one turn a day. 



It is evident that to equalise the work the middle 

 stages should be longer than the others, and they 

 might be divided as follows : 6, 6, 6, and io, making- 

 28 miles, with the times modified to suit the changed 

 distances. 



The fact is, that the additional teams are necessary 

 because there is no long stop in the middle, or be- 

 cause the road is done in two hours less total time 

 than it would have been if there were a long stop, 

 although the actual driving time is the same. 



Of the two coachmen required to work such a 

 road, one coachman, going over the whole road 

 each day, will go out Monday, Wednesday, and 



