"None of the conditions of this contract shall be varied, waived,
discharged or released, either at law or in equity, unless by the
express consent of the Minister testified in writing under his hand."
The plaintiff Summers on the day the contract was made assigned
to the plaintiff Peterson, by way of security for £100 borrowed, all
his rights under the contract including rights to the deposit, and other
moneys payable by the Commonwealth. He gave no notification
of this to the Department. He had no quarry of his own, but had
previously inspected for the Commonwealth, and favourably
reported on, the marble in a quarry near Orange, called " Caleula,"
belonging to a man named Walker. On 28th February he entered
into an agreement with Walker for the supply to him (Summers)
of the marble necessary to carry out the contract with the Govern-
ment. Walker's price to Summers was 8s. a cubic foot in the rough.
Walker had several blocks of various sizes already quarried, but
these blocks had to be cut or sawn down in order to meet the Com_
monwealth requirements. Eight of these blocks as they were in the
quarry were delivered by Walker to Summers, and by Summers
were tendered to the Government. The only change effected by
Summers in their condition was to mark on their surfaces, partly
by slightly incised marks covered with red paint and partly by paint
alone, the places where, if divided, these blocks would, in Summers'
opinion, produce blocks of the size stipulated in the schedule.
The main contest between the parties is whether, as the defendant
contends, the contract required Summers to deliver ** blocks" of
the scheduled size, modified only by the provision in the specification
that they should be full enough to bear working and polishing in
London and still measure the scheduled sizes, or whether, as the
plaintiff Summers contends, it permitted him to deliver blocks from
which a number, and as I understand the contention any number, of
"the schedule size blocks could be cut, the number only being limited
by what might be considered reasonable. A great deal of evidence
was given by the plaintiff Summers partly under the guise of " trade
usage," and partly under the name of " reasonable inference " from
the words in the deed, as showing the necessary or proper way of
sending marble to London for the purpose. Trade usage has not
been pleaded, but no objection was raised to the evidence on that