The Seine is a 777 km river in northern France.
In London Labour and the London Poor edition:
Phase 1
London Considered as a Great World. (The Great World of London): "The population of the departement du Nord is, in round numbers, 1,130,000; and that of the Seine 1,365,000. The population of Lancaster, on the other hand, is 2,031,236."
Vetted?
No