exploited in times of peace. The
photographic work carried out by aeroplanes during the war on the
western front and in Syria and Mesopotamia has shown the value of
aerial photography for map making and preliminary surveys of virgin
country. Photography of broken country and vast tracks of forest can
be much more easily undertaken from an airship than an aeroplane, on
account of its power to hover for prolonged periods over any given area
and its greater powers of endurance. For exploring the unmapped
regions of the Amazon or the upper reaches of the Chinese rivers the
airship offers unbounded facilities. Another scope suggested by the
above is searching for pearl-oyster beds, sunken treasure, and
assisting in salvage operations. Owing to the clearness of the water
in tropical regions, objects can be located at a great depth when
viewed from the air, and it is imagined that an airship will be of
great assistance in searching for likely places. Sponges and coral are
also obtained by diving, and here the airship's co-operation will be of
value. Small ships such as the S.S. Zero would be ideal craft for
these and similar operations.

The mine patrol, as maintained by airships during the war, encourages
the opinion that a systematic search for icebergs in the northern
Atlantic might be carried out by airships during certain months of the
year. As is well known, icebergs are a source of great danger to
shipping in these waters during the late spring and summer; if the
situation becomes bad the main shipping routes are altered and a
southerly course is taken which adds considerably to the length of the
voyage. The proposal put forward is that during these months as
continuous a patrol as possible should be carried out over these waters.
The airship employed could be based in Newfoundland and the method of
working would be very similar to anti-submarine patrol. Fixes could be
obtained from D.F. stations and warnings issued by wireless telegraphy.
Ice is chiefly found within five hundred miles of the coast of
Newfoundland, so that this work would come within the scope of the N.S.
airship. The knowledge that reliable information concerning the presence
of ice will always be to hand would prove of inestimable value to the
captains of Atlantic liners, and would also relieve the shipping companies
and the public of great anxiety.

There are possibly many other uses to which airships can be put such as
the policing of