I've noticed a reference that I'm not sure which definition to take the passage is from Orca PG 10. Paragraph 2 Darkness came as it always does, with shadows becoming dusk---shadows that were a bit sharper here than in Adrilankha, I suppose because the westerly winds thin out the overcast, so the Furnace is more apparent. Everything is brighter in the west of the Empire, as it is in the far east; all of which makes the darkness seem even darker. Now my first inclination is to take the reference to the 'Furnace' as it's their equivalent to the 'Sun' or our 'Sol' I think that it only became apparent to me because the word was capitalized as a proper name would be (go fig.). But... It could also be a proper name for the effect of sorcerous pollution or something to have to do with the use of sorcery. The word furnace can easily be defined as to exhale or exhaust (pollution in this case) which might be the exact effect that is caused >from using sorcery. I only battle my first inclination because of the capitalization -- where Jhereg and jhereg are two distinct and completely different things 'page to eye' the only difference is the capitalization. That makes me ponder, at any rate those are my two theories about it. Is there any other evidence pointing towards either of these possibilities?