In reply to whenry:
> ... but I'd sling myself to the tree, allowing my partner to tie the rope to the first bomber belay and abseil to the ground. Once there, he could get help, ideally in the form of a decent length rope, which he could lower down to you (you haven't said how far down from the top of the cliff you are, so I'm assuming it's just another pitch).
Dropping the rope would be a very last resort for me, although your idea could certainly work. The OP doesn't mention how far the top of the crag is, or whether it's overhanging, so getting a rope to you might not be possible in any reasonable way/timeframe. What if the rope gets caught dropping it - is there any wind that would hinder?
1 - If you have the guide book, I'd look to identify an easier route to ab down, such that you could stop and get an intermediate stance. I'm assuming the first pitch had gear on it and you can repeat that once you reach your mate.
2 - pretty much what they said above.
Post edited at 17:54