Here it is verbatim.
"My Dear Boy Jack,—The prolonged silence you have kept has rendered your absence a matter of serious moment to us all here, and to me more than all; I can bear it no longer. I intend to come in search of you and see for myself what keeps your tongue tied. Ah, I mean to rout you out and give a sharp eye to your shortcomings. Expect me then soon, for I hope to run athwart you, yardarm and yardarm, as an old salt we once knew used to say.
"Believe me, my dear Jack,
"Ever sincerely yours,
"Isaac Mole.
"P.S.—I am told that the native liquors where you are staying are more cheering than inebriating in their effects. This will suit me capitally; but as you and your companions may find sherbet rather thin diet, I shall bring with me a bottle or two of something with a more decided flavour."
"I tell you what," said Jack to his comrade Harry, "we shall have to look out for poor old Mole. We must send word back by special courier, that he may know what direction we have taken."
Messages were sent by sure hands to the different stations which they had made upon their journey, to guide Mr. Mole to the place Jack and Harry were stopping at.
"Meanwhile my only recommendation is, young gentlemen, that you don't get yourselves embroiled in any way with the native folks here any more. The Mussulmen are fierce and fanatical, and the least provocation may make them burst out into wildness."
The speaker was Captain Deering, and the occasion of it was the eve of another projected trip by Jack Harkaway and Harry Girdwood.