Martal's cushion of spine branches had already carried her several meters downslope. Her entourage had retreated to the rim, to join Alfin, the treemouth custodian.

Children were taught how to care for the tree. When Gavving was younger his tasks had included carrying collected earth and manure and garbage to pack into the treemouth, removing rocks to use elsewhere, finding and killing pests. He hadn't liked it much-Alfin was a terror to work under-but some of the pests had been edible, he remembered. Earthlife crops were grown here too, tobacco and maize and tomatoes, they had to be harvested before the tree swallowed them.

But in these dark days, passing prey were all too rare. Even the insects were dying out. There wasn't food for the tribe, let alone garbage to feed the insects and the tree. The crops were nearly dead. The branch was nude for half its length; it wasn't growing new foliage.

Alfin had had care of the treemouth for longer than Gavving had been alive. That sour old man hated half the tribe for one reason or another. Gavving had feared him once. He attended all funerals . .

but today he truly looked bereaved, as if he were barely holding his grief in check.

Day was dimming. The bright spot, the sun, was dropping, blurring. Soon enough it would brighten and coalesce in the east. Meanwhile

·yes, here came the Chairman, carefully robed and hooded against

the light, attended by the Scientist and the Grad. The Grad, a blond boy four years older than Gavving, looked unwontedly serious. Gavving wondered if it was for Martal or for himself.

The Scientist wore the ancient falling jumper that signified his rank: a two-piece garment in pale blue, ill-fitting, with pictures on one shoulder. The pants came to just below the knees; the tunic left a quarter meter of gray-furred belly. After untold generations the strange, glossy cloth was beginning to show signs of wear, and the Scientist wore it only for official functions.

The Grad was right, Gavving thought suddenly: the old uniform would fit Harp perfectly.

The Scientist spoke, praising Martal's last contribution to the health of the tree, reminding those present that one day they must all fulfill that obligation. He kept it short, then stepped aside for the Chairman.

The Chairman spoke. Of Martal's bad temper he said nothing; of her skill with the cookpot he said a good deal. He spoke of another loss, of the son who was lost to Quinn Tuft wherever he might be. He spoke long, and Gavving's mind wandered.

Four young boys were all studious attention; but their toes were nipping at a copter patch. The ripe plants responded by launching their seedpods, tiny blades whirring at each end. The boys stood solemnly in a buzzing cloud of copters.