Here and there very pale traces of the previous writing were faintly visible, but there was not enough to give the sense of what was gone.

This proved that the ink had not been long dry when it had been removed, as the expert explained.

It was very hard to destroy old writing so completely that neither heat nor chemicals would bring it out again.
Therefore Feist must have decided to change the entry soon after he had made it, and probably on the next day.

The expert had not found any other page which had been similarly treated.

The shabby little man looked at Logotheti, and Logotheti looked at him, and both nodded; and the Greek paid him generously for his work.
It was clear that Feist had meant to aid his own memory, and had rather clumsily tampered with his diary in order to make it agree with the evidence he intended to give, rather than meaning to produce the notes in court.