What happens to Iff's slipper when it touches the Ocean in the Old Zone?
It was instantly eaten away with a fizz and a hiss and a burble and a gurgle.

How is the Ocean described in the poisoned Old Zone?
Cold and filled with a thick, dark poison that obliterates the colors.
What is the wall of night?
A colossal ship, a cast ark-like vessel standing at anchor in the clearing. The flagship of the Cultmaster, Khattam-Shud.
What do the Chupwalas take from Butt?
His brain.
What does Iff give to Haroun?
A little emergency something, courtesy of P2C2E House. A Bite-a-Lite.

What is being manufactured on Khattam-Shud's Ship?
Darkness; the poison which is ruining the Ocean.
What/Who other thing/person does Khattam-Shud remind Haroun of?
Mr. Segupta
What does haroun notice about the ship?
It has a quality of "shadowiness"
Who is described as "skinny, scrawny, measly, weaselly, sniveliing clerical type..."
Khattam-Shud
What is surprising about Khattam- Shud?
Khattam Shud actually speaks when his followers are forbidden to.