It is traditionally the belief of policemen that they can tell what a substance is by sniffing it and then gingerly tasting it, but this practice had ceased in the Watch ever since Constable Flint had dipped his finger into a blackmarket consignment of ammonium chloride cut with radium, said “Yes, this is definitely slab wurble wurble sclup,” and had to spend three days tied to his bed until the spiders went away.
