Kerans went back to his desk and sat down. From his jacket pocket he withdrew the compass and placed it in front of him, cradling it between his hands. Around him the muted sounds of the laboratory formed a low background to his mind, the furry puttering of the marmoset, the tick of a recording spooi somewhere, the grating of a revolving rig estimating a creeper's phototropism.

Idly Kerans examined the compass, swinging the bearing gently in its air-bath and then aligning the pointer and scale. He tried to decide why he had taken it from the armoury. Normally it was installed in one of the motor launches, and its disappearance would soon be reported, probably involve him in the petty humiliation of admitting its theft.

Caging the compass, he swung it around towards himself, without realising it sank into a momentary reverie in which his entire consciousness became focussed on the serpentine terminal touched by the pointer, on the confused, uncertain but curiously potent image summed up by the concept 'South', with all its dormant magic and mesmeric power, diffusing outwards from the brass bowl held in his hands like the heady vapours of some spectral grail.