That was because of war profits.

People were throwing money about now.

But when the war industries came to an end?
and the national bills had to be paid?
'The only thing that can't go down is land,' thought Sir Henry, with the cheerful consciousness of a man who had steadily year by year increased what had originally been a very modest property to something like a large estate.
Mannering had plenty of that commodity.

But how far had he dipped the estate?
It must be heavily mortgaged.

By decent management anybody, no doubt, might still bring it round.