Possible Clues:

• Regret accepting equal income
• Part of IRS
• State's income
• Regret concealing steady income
• Return from flat in French street
• With most of the Continent looking skywards, Verne's voyaging proceeds
• Proceeds from eastern location, south of Cromer, ultimately
• Counterpart of expenses
• Expenditures' counterpart
• Income generated by engineers replacing start of tree-lined road