Night Broadcast

I checked the damp clay seam with my wrapped thumb. Smooth. Firm. The corridor stood dead still. Linen creaked against linen as I settled my slate tablet into the iron nut tripod. Eight subscribers awaited the nightly conclusion. I reached up deliberately and lifted the walnut half-shell away from the acorn cap, letting pale greenish bioluminescence spill over my chalk tallies and bone marker. I faced the stone acoustic pocket. In slow, measured rasps, I delivered my evening report into the vault. No draft interrupted a single word. Perfect delivery. I replaced the shell, leaving the alcove in serene, silent shadow.