What does the doctor say about Jim? CH 39-end

From the text:

"Don't be no rougher on him than you're obleeged to, because he ain't a bad nigger. When I got to where I found the boy I see I couldn't cut the bullet out without some help, and he warn't in no condition for me to leave to go and get help; and he got a little worse and a little worse, and after a long time he went out of his head, and wouldn't let me come a-nigh him any more, and said if I chalked his raft he'd kill me, and no end of wild foolishness like that, and I see I couldn't do anything at all with him; so I says, I got to have help somehow; and the minute I says it out crawls this nigger from somewheres and says he'll help, and he done it, too, and done it very well. Of course I judged he must be a runaway nigger, and there I was! and there I had to stick right straight along all the rest of the day and all night. It was a fix, I tell you! I had a couple of patients with the chills, and of course I'd of liked to run up to town and see them, but I dasn't, because the nigger might get away, and then I'd be to blame; and yet never a skiff come close enough for me to hail. So there I had to stick plumb until daylight this morning; and I never see a nigger that was a better nuss or faithfuller, and yet he was risking his freedom to do it, and was all tired out, too, and I see plain enough he'd been worked main hard lately. I liked the nigger for that; I tell you, gentlemen, a nigger like that is worth a thousand dollars—and kind treatment, too. I had everything I needed, and the boy was doing as well there as he would a done at home—better, maybe, because it was so quiet; but there I was, with both of 'm on my hands, and there I had to stick till about dawn this morning; then some men in a skiff come by, and as good luck would have it the nigger was setting by the pallet with his head propped on his knees sound asleep; so I motioned them in quiet, and they slipped up on him and grabbed him and tied him before he knowed what he was about, and we never had no trouble. And the boy being in a kind of a flighty sleep, too, we muffled the oars and hitched the raft on, and towed her over very nice and quiet, and the nigger never made the least row nor said a word from the start. He ain't no bad nigger, gentlemen; that's what I think about him."