Preface
_ DEAR BOYS:
I believe it is not necessary to introduce the Motor Boys to most of my readers, as they have made their acquaintance in the previous books of this series. To those, however, who take up this volume without having previously read the ones that go before, I take pleasure in presenting my friends, Jerry, Ned and Bob.
They are booked for quite a long trip, this time； across the continent to the Pacific coast, where they are destined to have some stirring adventures, searching for a mysterious derelict.
Those of you who know the Motor Boys from their past performances know that they will meet emergencies in the right spirit, and that they will do their level best to accomplish what they set out to do. Whether they did so in this case I leave it for you to determine by reading the book.
Though their own motor boat, the Dartaway, was destroyed in a train wreck, they managed to get the use of a powerful craft, in which they made a cruise on the Pacific ocea

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