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252 Remarks on Mr Facob’s Obſervations,

any tendency towards C or D FEE

pA

fore ah axle which is ſtraight below will not preſs the wheel cither outward or inward, in ſo far as ît is acted on by no other cauſe than the downward preſſure-

Again, ſuppoſe a b(fig- 13,) to VE an axle arm bending downwards, and cd to be the part of the buſh on which it preſſes. Ic is plain, that the wheels will be preſſed inwards by this form of the axle.:

I muſt now obſerve, that the axle arm exerts another preſſure upon the buſhes, beſides that which 1S diredly downwards. Far, by the draught of the horſes, it muſt alſo preſs upon the fore part of the buſh. This forward preſſure is but very ſmall in comparli-

ſon with the downward preſſure, when

the