Four: I turn from the cormorant itself to the bird’s natural product, guano, a resource that in the nineteenth century brought the Pacific into the global economy, profoundly affected the environment worldwide and enriched Europeans through the de facto slavery of thousands of Chinese indentured labourers on the Peruvian guano islands. Beginning with the filthy riches made from the guano trade by the UK-based Gibbs family, I outline the chemistry of guano, the European capitalisation of guano, and the conditions of labour of the guano workers. I then turn to the James Bond novel Dr No, locating Ian Fleming’s interest in guano and his transposition of the guano trade from Peru to the Caribbean in his banking family’s close connection with the Gibbses. I conclude with a discussion of the origins in the history of guano of the idea of dirt as ‘matter out of place’.