"'Cost,' not being defined is an ambiguous
and uncertain term. 'The general idea of
cost covers a number of different meanings'
(p.35, Incidence ot Overhead Costs,
Professor Maurice Clark). One finds in
Carter's Advanced Accounts such expressions
as flat cost, prime cost and total cost.
And Professor Van Sickle, Cost Accounting,
p.4, says that 'while cost accounting can
be defined, 1t is quite another thing to
endeavour to define cost.' These books on
accountancy illustrate the differing
opinions of accountants as to the proper
items of expense to ainclude under the
heading of cost and the proper method of
allocating them to particular articles. In
Dawson's Accountant's Compendium it is
stated that 'the cost of the materials and
directly productive wages form the prime
cost of the commodity or work, and the
other expenditure, being indirect, is
called the on-cost, the two together making
the total cost of production.' In the
present case does 'cost' mean merely the
cost of the material used plus the amount
paid to the make-up tailor? Or does it
include an allowance for the time of the
plaintiff or his employees in showing the
customer the range of materials, measuring
him and sending the materials and
instructions to the make-up tailor? What
overhead costs does it include?"