As they were naturally interested in the subject of native troops in the French service, Frank took the first opportunity to make a sketch of a couple of them that he saw on duty. He found that they wore a blue blouse with white trousers--or, rather, that the trousers had been white at some former date--and their heads were protected from the heat of the sun by flat hats made of pith or cork, while their feet were bare. The men that he saw were armed with breech-loading rifles of French manufacture, and they carried their cartridges at the waist-belt, after the European fashion. Strolling by the river-bank, the boys saw three or four light gun-boats at anchor in the stream. They learned that the government had about twenty of these boats, which were used for transporting troops wherever they were needed, and also for the purpose of protecting the natives against pirates, and to enforce the laws generally. They observed that the police were not of the same nationality as the soldiers, and found, on inquiry, that the policemen were all Malays from Singapore, under the supervision of French chiefs. They are said to be very efficient, and one great advantage of employing them is that they are not likely to be involved in any of the native conspiracies. By the end of their second day in Saigon, it occurred to the boys that it was about time to begin a letter to friends at home. "We will write it as we did the letters from Kioto and Hong kong," said Frank; "that is, provided you are willing." Fred assented to the proposal, and so it was agreed that they would make up a single letter, in which each should describe some of the things they had seen, and they would so arrange it that nothing should be described twice. They devoted all the time they could spare from sight-seeing to the production of this letter, and here is the result: "We have been walking and riding around Saigon, and have seen a great many things that are new to us. This morning we started early for a walk to Cholon, about three miles away, and had a very pleasant time on the road. We met crowds of people coming to town with basketsful of fresh vegetables for the market; they were nearly all women, and their dress was much like that of the women we saw in Canton, except that they had great hats like circular trays. Part of the way the road follows the bank of a ditch, which the French call 'The Grand Canal;' but there is not much grandeur about it, as it is half-choked with weeds, and when the tide is out there is not water enough to float a boat of any size. There has been no rain for weeks, and the dust was so thick that sometimes we could hardly see across the road, and were in danger of being run over. [Illustration: THE KING OF THE BEGGARS.]