A small metal apparatus

Selon FN (p. 341)

From his saddlebags, Rumail took out a small metal apparatus, unfolding its segmented wings. The belly of rounded glass glowed poisonous green, but otherwise it was shaped like a bird. A starstone chip glittered where its left eye should be.

Rumail…From his saddlebags, he drew out three mechanical devices, fashioned in the size and shape of small hawks (p. 345)

Brows furrowed, Rumail studied the laran-powered devices. The bonewater dust which filled their fragile glass bellies was intented only as last resort.

The bonewater dust, quiescent now, with only a faint greenish pinpoint radiance, had been purchased from the renegade circle in Temora at an obsence cost…

He establish a link with the small starstone guide chips set in each device and tossed them into the air. The guidance mechanisms were so simple, he effortlessly controlled all three of them. Mechanical wings whirred as they gained altitude...

Plus tard...Rumail se retrouve contaminé par le "bonewater" et il va créer une barrière entre lui et la particule pour se protéger.