THE THEORY OF RAILROAD RATES
Analysis of railroad expenditures, 44.--Constant v.
variable outlays, 45.--Fixed charges, 46.--Official
grouping of expenses, 46.--Variable expenses in each
group, 51.--Peculiarities of different roads and
circumstances, 56.--Periodicity of expenditures, 61.--Joint
cost, 67.--Separation of passenger and freight business, 68.