Despite its editors' best efforts, this is a very good Emerson anthology. All the most important texts are there, on Norton's customary thin onionskin paper, in a surprisingly compact volume, typeset nicely. The selection includes not just Nature and a handful of the best known of Emerson's First and Second Series of essays (though it would've been nice to include more of these central texts), but interesting early sermons and some of Emerson's late-career essays from Representative Men and The Conduct of Life. And there's also a scattering of wonderful lesser-known published pieces, addresses, letters, and unpublished journal material, clearly selected with an eye to fitting Emerson into his literary, historical, and political context. Some interesting critical work also fits in the back pages, pre-eminently Cornel West's extremely intelligent essay and an early piece of Stanley Cavell's (though readers might also be interested in Cavell's more recent collection of essays on Emerson), which you won't find in any other similar volume. (The self-inclusions by the volume's editors are best ignored.)
But the editors have done their best to render the volume unusable by peppering it densely with useless footnotes. They have chosen to use their footnotes as insults to the reader's intelligence rather than aids to his scholarship, intruding frequently and fussily to define slightly obscure words, to refer to other similar phrasings elsewhere in Emerson, to correct the author on the basis of twentieth-century science (!), or simply to harrumph and remind the reader of their presence. Of course, the occasional helpful note is scattered among this dross, illuminating a classical allusion or pointing to a contemporary (19th-century) context, so one is hard pressed simply to ignore them all.
This is a travesty of "student-centered" editing, and comes close to rendering the volume unreadable; fortunately, it doesn't quite succeed. Still, readers might prefer to look at the Library of America's Emerson volume, which lacks the uneven but sometimes excellent critical material but offers a more complete selection of texts than this one in a similarly elegant single volume, and is blessedly free of footnotes (though, in fact, it has helpful endnotes if you go looking for them). We can always find a dictionary if we need one...