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tanks getting into the region of the hot exhaust.
  Experiments are also being conducted with Pyrene fire extinguishing systems similar to the Burke system developed at McCook Field.

PROPELLERS.
  All possible impetus is being given toward the development of all-metal air screws because of demands for heir adaptation on service colonial type machines in the East, In Mesopotamia and in Egypt.  The employment of wooden propellers of the conventional type has not been satisfactory in these countries. The British are not aware of the advantages of the American Bakelite propeller for this work. 

BOMB INSTALLATION.
  The trend of bomb installations is to put them under the fuselage. This obviates the large head resistance that would be inherent with exterior wing installation such as was used in the War. 

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