246 



EIGHTH REPORT — 1838. 



The coach being dismissed from the summit with a velocity f 

 of 100 yards in seven seconds, was gradually i-etarded until it 

 reached the twentieth stake, when it attained a speed of 100 ' 

 yards in 13^ seconds. It fluctuated between 100 yards in 13*2 

 seconds and fourteen seconds to the foot of the plane. The 

 velocity, therefore, for the last 2000 yards may be considered 

 as uniform, its mean amount being 100 yards in 13^ seconds, 

 being the same with the result of the former experiment. At 

 this speed, therefore, with a favourable Mind, the resistance of 



• Distance from this stake to h'i\ mile post =: 275 yards. 



