Finally they reached the entrance to the Bosphorus, and found themselves passing along a narrow stretch of water that filled them with delight. It was bordered with green groves, white buildings of rich Turks, occasional fortresses, and in places arose the domes of magnificent mosques, with their accompanying minarets, where at certain hours the meuzzen’s loud call to prayer could be heard, summoning the faithful Mahometans to worship.

Then came Constantinople, where they meant to spend several days before starting for London via Italy.

Here they had the time of their lives, prying into all sorts of strange places, and seeing just how the red-fezzed Turks lived. All of them enjoyed it to the full, and no doubt laid up a treasure of recollections that would haunt them the balance of their lives.

Buster was wild to see the inside of a mosque the first thing, and managed to accomplish it with his mates, though all of them had to remove their shoes and put on ridiculous red slippers without heels, for the sacred interior of the temple would be profaned if shoes were worn.

Josh had gotten it in his head that he would love to see what a harem looked like, and came near getting into serious difficulty in pursuing this fad; but he never reached his goal, and had to give it up.

All the same, the boys looked upon a myriad of strange sights, such as they had read about in books like the Arabian Nights, but never really expected to see with their own eyes.

Jack noticed that there were a great many Germans in Constantinople, and he expressed the opinion that sooner or later he believed Turkey would align herself with the Teuton powers against her old-time friends and backers, Great Britain and France. His prediction was later on fulfilled, as events proved, and eventually Turkey took the mad plunge into war at the behest of her master, Germany, to submit her last slender grip on European territory to the test of the sword.

Here in the wonderful city on the Golden Horn we will say good-by to the four Motorboat Boys. They fully expected to start for Italy in two days, and were now only filling in the time waiting for a certain steamship to arrive that would convey them through the Sea of Marmora, along the historical Dardanelles into the Ægean Sea, and finally to Naples, where they could at their pleasure sail for London and home.

No doubt our adventurous young friends, whose fortunes we have followed with so much pleasure in this and previous volumes, are bound to meet with further stirring experiences, which in due time we shall hope to lay before the reader. Until that time arrives we shall have to drop the curtain and write the words

THE END.