They were never found, or, if found, never accounted for by the finders.
That would have accounted for her reaction in Norfolk.
The alleged occurrence of the disease in localities free from mosquitoes or without their agency is not well attested; its absence from other localities where they abound is accounted for by their being of an innocent species, or - as in England - free from the parasite.
The junction in Southwark of the great roads from the south of England for the passage of the Thames sufficiently accounted for the early origin of Southwark.
This large increase is to be accounted for by the fact that during the Napoleonic rgime the government steadily refused to issue inconvertible paper currency or to meet war expenditure by borrowing.