This is based on the live version. I'm not sure whether he plays these exact
chords on the album version, but they seem to fit the song. 
It's basically just three chords - C (or C/G), Em and Am - with a slight
variation on the D string. Tabbed out, it would look something like this:

    C5        E5       A5
e | --0--0-0- | -0--0-0- | -0--0-0- | 
B | --1--1-1- | -0--0-0- | -1--1-1- | 
G | --0--0-0- | -0--0-0- | -2--2-2- | 
D | --2-p0h2- | -2-p0h2- | -2-p0h2- | 
A | --3--3-3- | -2--2-2- | -0--0-0- | 
E | -(3--3-3) | -0--0-0- | -------- | 


I've marked the spots in the lyrics with the letters ph, but listen to the
song and watch the live videos for the exact timing. 


Tuning: Standard

Intro: C5 (ph) E5 (ph) A5 (ph) E5 (ph) C5 (ph)

C5    (ph)          E5        (ph)
The smell of newly cut corn
     A5      (ph)             E5    (ph)   C5
Came sifting through the palm trees
C5  (ph)           E5      (ph)
My eyes they were blinded
       A5     (ph)       E5       (ph)  C5
By the sun reflecting on the seas


C5   (ph)          E5       (ph)
One hundred dozen mermaids
A5          (ph)               E5   (ph)  C5
Smiled as I passed through the haze 
C5   (ph)              E5      (ph)
The sound of familiar voices
A5  (ph)  E5   (ph)  C5
Of yonder days

C5 (ph) E5    (ph) A5    (ph) E5
Jerusalem , Jerusalem , Jerusalem
E5 (ph)       C5
    Oh no, no

Chord pattern repeated throughout the song.