Joan shook the hand frankly, and its possessor passed on.

“Is that the gas-man?” inquired Major White, gravely. He had been standing beside her ever since his arrival, seeking, it seemed, the protection of one who understood these social functions. It is to be presumed that the major was less bewildered than he looked.

“Hush!” And Joan said something hurriedly in White's large ear. “Everybody has him,” she concluded; and the explanation brought certain calm into the mildly surprised eye behind the eye-glass. White recognized the phrase and its conclusive contemporary weight.

“Here's a flat-backed man!” he exclaimed, with a ring of relief. “Been drilled, this man. Gad! He's proud!” added the major, as the new-comer passed Joan with rather a cold bow.

“Oh, that's the detective,” explained Joan. “So many people, you know; and so mixed. Everybody has them. Here's Tony—at last.”

Tony Cornish was indeed making his way through the crowd towards them. He shook hands with a bishop as he elbowed a path across the room, and did it with the pious face of a self-respecting curate. The next minute he was prodding a sporting baronet in the ribs at the precise moment when that nobleman reached the point of his little story and on the precise rib where he expected to be prodded. It is always wise to do the expected.

At the sight of Tony Cornish, Joan's face became grave, and she turned towards him with her little frown of preoccupation, such as one might expect to find upon the face of a woman concerned in the great movements of the day. But before Tony reached her the expression changed to a very feminine and even old-fashioned one of annoyance.

“Oh, here comes mother!” she said, looking beyond Cornish, who was indeed being pursued by a wizened little old lady.

Lady Ferriby, it seemed, was not enjoying herself. She glanced suspiciously from one face to another, as if she was seeking a friend without any great hope of finding one. Perhaps, like many another, she looked upon the world from that point Of view.

Cornish hurried up and shook hands. “Plenty of people,” he said.