[A] Thus the London merchants dispense with the care, trouble,
and expense of a money-chest on their own premises, and all money
operations are transacted by a small number of bankers at the _Clearing
House_. The amount of these transactions often rises to fifteen
millions sterling [a day], independently of those which are not
strictly commercial, and of those of the retailers, which do not pass
through the hands of bankers. See _Babbage's Economy of Machinery_.
[B] The whole number of passengers to and from Calais, through which
most of the travellers between England and France pass, is only about
forty thousand yearly. This is not more than the number passing between
Havre and New York.
[C] It is estimated that 25,000 vessels enter the port of London yearly.
[D] 50,000 gallons.