 What did David determine the black box was for?
The mesh-covered hole and the two lights looked like a caricature of a face, set in a panel of dials. They stood for anything I might guess, and something kept pricking my mind, telling me I had no time to guess. It meant the engine or engines took up half the ship, cut off from the forward half by the instrument studded shield. The box behind her head was completely closed, and it didn't yield to the pressure I applied. It had a cover, but no other opening where an arm could extend. There were earths and minerals, seeds and chemicals, testing equipment in compact drawers, but nothing marked for me.
 A device to deliver medication
 Storage of canned food  A navigation device  A device to deliver medication  Testing equipment