There was no X.in their family.
"May we really go away in it and discover England ?" Robert asked.
"I suppose so," said Mrs.Avory.
"Then that makes Sea View all right," said Gregory.

"Because this will do instead." The poor Rotherams! Sea View had suddenly become tame and almost tiresome.
Mrs.Avory saw their regrets in their faces, and cheered them up by the remark that the caravan must sometimes be lent to others.
"Oh, yes," said Janet.
"Do you think Dr.Rotheram would let you go ?" she asked Mary.
"Of course he would," said Jack.

"But I wish it was a houseboat." The suggestion was so idiotic that everyone fell on him in scorn.
"But who is X. ?" Mrs.Avory asked.
The letter was written in a round office hand that told nothing.

Mr.
Scott was the most likely person, but why should Mr.Scott hide?
He never had done such a thing.

Or Mr.Lenox?
But neither was it his way to be secret and mysterious.