354 STABLE ECONOMY. 



non decline as the pace is raised , but it seems of no use ex- 

 cept to illustrate the general principle. 



Pace in Miles Power exerted Duration of Exertioa 



per Hour. in Ibs. in Hours. 



2 112 10 . 



3 74 two thirds 9 



4 56 8 



5 44 four fifths 7 



6 37 one third 6 



7 32 5 



8 28 4 



9 24 eight ninths 3 



10 22 one tenth 2 



II 20 four elevenths... 1 



In the table opposite will be found a statement of work at dif- 

 ferent paces. The table is not so complete as I wish, but so 

 far as it goes it shows the amount of work actually performed. 

 The weight of the load is stated at the highest, but on many 

 days it may be considerably lighter, especially in stage- 

 coaches. 



