The phantom airship scare appears to be dying. Today, only the Globe has any articles relating to it. The first is from the front page humour column:
Some more "dark, cigar-shaped objects" have been seen. They were in the mouths of some German gentlemen, and emitted a dull red light and a strong odour. It is not known what they were.
And the second may not be about phantom airships at all. It is a report on 'The balloon scare in Belgium' (p. 9):
The "Belge Militaire" speaks in strong terms of the great danger involved in Belgium in the frequent visits that are being paid to Belgium by German airships in all directions; these balloons are in every case manned by German officers who have taken photographs of the most important military and strategic points in Belgium.
The Belge Militaire (obviously a Belgian military journal) says that any German balloon (or airship; the term seems to be used interchangeably here) which comes to ground in Belgium should be treated roughly, any photographic equipment and film being confiscated. It would be no more than Germany does to Belgian balloons which land in its territory.
Frustratingly, there is nothing here about what evidence there is for such visitations. It's not clear if Belgium has been experiencing something like the British scareships or whether the Belgian army routinely detects Zeppelins flying over its borders. Either seems plausible.
Otherwise, the press seems to be reverting to its more usual defence preoccupation: dreadnoughts. German admirals are fulminating about unnecessary British naval construction and the British Navy League wants four more dreadnoughts this year. Business as usual.