Several key passages in The Prelude

"The glad preamble" (1850, I.1-45)
"Was it for this . . . ?" (1850, I.269-300; this passage begins the 1799 version)
Stealing the "little boat" (1850, I.357-424; this is considerably longer in the 1805 version, and appears in 1799, part I)
"Blest the infant Babe" (1799, II.297; 1850, II.232)
"If this be error" (1700, II.465 ff; 1850, II.419-471)
The discharged soldier (1850, IV.369ff)
The dream of the Arab (1850, V.70-166)
The Boy of Winander (1850, V. 364-425); it also forms a separate poem, "There was a boy" (Perkins 211)
The Drowned Man (1850, V. 426-459)
Simplon Pass (1850, VI. 556-753):
Citations
Summary/Excerpts of criticism on Simplon Pass
Genius of Burke(1850 only, VII.512-543)
The Blind Beggar (1850, VII.619-649)
Bartholomew Fair (1850, VII.675-771)
The Rustic Fair (1850, VIII.11-69)
Vaudracour and Julia (1805, IX.556-935; in the early version of the Revolution Books--see books above)
"The Crisis of that Strong Disease" (1850, XI.396ff)
"Spots of Time" (1850, XII.208-335; also in the 1799 version)
Mount Snowdon (1850, XIV.1-231)
Conclusion

Fair seed-time had my soul, and I grew up
Fostered alike by beauty and by fear:
Much favoured in my birth-place, and no less
In that beloved Vale to which erelong
We were transplanted;--there were we let loose
For sports of wider range. Ere I had told
Ten birth-days, when among the mountain slopes
Frost, and the breath of frosty wind, had snapped
The last autumnal crocus, 'twas my joy
With store of springes o'er my shoulder hung 310
To range the open heights where woodcocks run
Along the smooth green turf. Through half the night,
Scudding away from snare to snare, I plied
That anxious visitation;--moon and stars
Were shining o'er my head. I was alone,
And seemed to be a trouble to the peace
That dwelt among them. Sometimes it befell
In these night wanderings, that a strong desire
O'erpowered my better reason, and the bird
Which was the captive of another's toil 320
Became my prey; and when the deed was done
I heard among the solitary hills
Low breathings coming after me, and sounds
Of undistinguishable motion, steps
Almost as silent as the turf they trod.

Prelude I. 301-25.