"You’ll never appreciate how easy this is going to be compared to a typical poisoning," said Oyonnax in a light conversational tone, as if this would set Eliza at ease. Eliza had now drawn close enough to see the green thing: a tiny phial such as might be used for perfume, carved out of jade, bound in bands of silver, with a silver stopper on a fragile chain. "Don’t dab this behind your ears," said the Duchess.