This was, no doubt, the awkward spot where the trunks closed on the track, and there was a corner.

He must go on and trust to luck for getting round.
In a few moments he was almost at the corner, and although it was hard to see, thought he distinguished a break in the dark wall of trees.

One must keep to the inside, on the right; but there was very little room, and if he miscalculated, he or the horses would collide with a trunk.
He smashed through a bush that caught his foot, but his hold upon the bridle saved him from a fall.

It looked as if he had left the track and was plunging into the wood.

Then a black trunk became detached from the rest, apparently straight in front.