106 BIPEDS AND QUADRUPEDS. 



of the hind horse becomes apparent to any one. To 

 be really an efficacious aiBistant, the traces of the 

 leading horse should draw sufficiently horizontally to 

 produce no pressure at all on the shaft horse's back. It 

 may be asked how this is to be remedied? There are 

 two ways, either of which will of course do it : put 

 a lower horse behind, or a higher one in front. 

 But it may be said, the owner has but these two 

 animals, so he cannot make a proper change; we 

 will endeavour to help him out of his dilemma. The 

 shaftsof a cart with a tall horse in them, always elevate 

 from the hinder part of them to the point, and of course 

 the taller'the animal the greater will be the elevation : 

 unless the back -band is linked conveniently long, add 

 four or five feet of chain to the leading horse's traces. 

 The different effect of this I can shew in three drawn 

 lines like the former, but with an additional one to 



shew the difference: the lower line a shews the trace 

 lengthened, by a small bit of chain, &, say twelve inches 

 long, going to the shaft, to support the additional 



