I'm afraid that I don't have much to say for this chapter other than it was a creative way of getting Merry and Pippin back with Frodo.
Here is another point where we see that Hobbit nature come out in our four heroes. It is almost startling how loyal they are to Frodo after what Pippin and Sam had gone through with the Black Riders and all, yet still braver of them to dare plan of going into the Old Forest (I have an analysis on that but I'll save it for the next chapter

).
Besides that I'm afraid I don't have much to say, other than Tolkien writes one of the best baths songs I've ever heard in this chapter.