"In 1871, just two years ago," the captain continued, "a French traveller, under the auspices of the Geographical
[Illustration: Jack cried out in the greatest excitement that Dingo knew how to read]
Society of Paris, set out for the purpose of crossing Africa from west to east. His starting-point was the mouth of the Congo, and his exit was designed to be as near as possible to Cape Deldago, at the mouth of the River Rovouma, of which he was to ascertain the true course. The name of this man was Samuel Vernon, and I confess it strikes me as somewhat a strange coincidence that the letters engraved on Dingo's collar should be Vernon's initials."
"Is nothing known about this traveller?" asked Mrs. Weldon.
"Nothing was ever heard of him after his first departure. It appears quite certain that he failed to reach the east coast, and it can only be conjectured either that he died upon his way, or that he was made prisoner by the natives; and if so, and this dog ever belonged to him, the animal might have made his way back to the sea-coast, where, just about the time that would be likely, the captain of the 'Waldeck' picked him up."
"But you have no reason to suppose, Captain Hull, that Vernon ever owned a dog of this description?"
"I own I never heard of it," said the captain; "but still the impression fixes itself on my mind that the dog must have been his; how he came to know one letter from another, it is not for me to pretend to say. Look at him now, madam! he seems not only to be reading the letters for himself, but to be inviting us to come and read them with him."
Whilst Mrs. Weldon was watching the dog with much amusement, Dick Sands, who had listened to the previous conversation, took the opportunity of asking the captain whether the traveller Vernon had started on his expedition quite alone.
"That is really more than I can tell you, my boy," answered Captain Hull; "but I should almost take it for granted that he would have a considerable retinue of natives."
The captain spoke without being aware that Negoro had meanwhile quietly stolen on deck. At first his presence was quite unnoticed, and no one observed the peculiar glance with which he looked at the two letters over which Dingo still persisted in keeping guard. The dog, however, no sooner caught sight of the cook than he began to bristle with rage, whereupon Negoro, with a threatening gesture which seemed half involuntary, withdrew immediately to his accustomed quarters.