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of packets after examination, the Council consider that
in addition to articles of enemy origin or destination,
and letters which are obviously calculated to injure the
naval or military interests of the Allies, letters of the
following descriptions ought to be detained till the end
of the war:-
(1)
(2)
(3)
(4)
Trade letters containing codes which cannot be
decyphered and, which may embody important schemes
for evading the Blockade.
Trade letters containing plans for interfering by
forestalment or otherwise with the supply of
vital materials to the Allies from neutral
countries.
Trade letters the receipt of which with a label
indicating that they have been opened by the
British Censor would reveal to the enemy the
fact that their schemes had been discovered, and
destroy the practical utility of the information
extracted therefrom by the Censor. For instance,
the enemy are at present using commercial codes
in ignorance of the fact that the Censor has
intercepted the key. If the key had been sent on
in a cover marked "opened by Censor" they would
certainly not be doing so.
Trade letters containing plans for improving the
Exchange in neutral countries in favour of the
enemy.
(5) Trade letters containing commercial propaganda,
plans for ousting British Trade from neutral
markets or negotiations for the purchase of
materials on a large scale in neutral countries
by/