World's End by Richard Jefferies

With his own hands Theodore constructed the infernal machine and prepared the materials for generating the deadly vapour at the shortest notice. This, the first part of the scheme, having been settled, there remained two great difficulties to overcome. The first was to get the claimants on board one vessel -- travelling in a body; and the second was to secure their passage by a steamer carrying a valuable cargo, so as to increase the gain of salvage money to the utmost.

It was not easy to manage the first matter; the latter Marese thought he saw his way through. It happened just then that the payment of the war indemnity to Germany caused a great drain of gold from this country; the value of the precious metals consequently rose, and the imports increased to meet the demand. Gold and silver came in large quantities from New York, both in coin and bullion -- especially silver.