As the boys rode along, their attention was drawn to some tall ladders that rose above the buildings, and they eagerly asked the Doctor what those ladders were for. They could not see the use of climbing up in the air and then coming down again; and, altogether, the things were a mystery to them. A few words explained the matter. The ladders were nothing more nor less than fire-lookouts, and were elevated above the buildings so that the watchmen could have an unobstructed view. A bell was attached to each ladder, and by means of it a warning-signal was given in case of a threatened conflagration. Fires are frequent in Tokio, and some of them have done immense damage. The city is mostly built of wood; and when a fire breaks out and a high wind is blowing, the result is often disastrous to an enormous extent.
After the great fires of the last twenty years, the burned districts have been rebuilt of stone, or largely so; and precautions that were hitherto unknown are now taken for the prevention of fresh disasters. Some of the new quarters are quite substantial, but they resemble too strongly the edifices of a city in Europe to be characteristic of Japan.
A portion of the way took our friends through the grounds of some of the castles, and the boys were rather astonished at the extent of these residences of princes. Doctor Bronson explained that Tokio was formerly a city of princes, and that the residences of the Daimios, as these great men were called, were of more consequence at one time than all the rest of the city. The palace of a Daimio was known as a _yashiki_, and the yashikis were capable, in some instances, of lodging five or ten thousand men. Under the present government the power of the princes has been taken away, and their troops of retainers have been disbanded. The government has converted the most of the yashikis into offices and barracks and schools, and one at least has been turned into a manufactory.
The original plan of Tokio was that of a vast camp, and from that the city grew into its present condition. The best locations were occupied by the castles and yashikis, and the principal castle in the centre has the best place of all. Frank observed as they crossed the bridge leading into the castle-yard that the broad moat was full of lotos flowers in full bloom, and he longed to gather some of them so that he might send them home as a souvenir of the country. He had heard of the lotos as a sort of water-lily, similar in general appearance to the pond-lily of his native land. He was surprised to find a flower, eight or ten inches in diameter, growing on a strong stalk that did not float on the water, but held itself erect and far above it. The Doctor explained the matter by telling him that the Japanese lotos is unlike the Egyptian lotos, from which our ideas of that flower are derived. But the Japanese one is highly prized by the people of all ranks and classes, and it grows in abundance in all the castle-moats, and in marshy ground generally.