They sat down on the edge of the tower and discussed the matter for a long while, our hero telling of the promise made by the Mexicans that he should be rewarded for his services, and should carry away as much as he desired. Then he listened while Philip told of the adventures of the men who remained aboard the brigantine, and of how they were captured.

"And now we come to the time when you are our leader, and we are to face these Spaniards again," said Philip. "Tell us what we are to do, for you have twenty-six men, all of whom can act as officers."

"Then let us seek out Peter Tamworth, and ask his advice," answered Roger, thoughtfully. "He is a mariner of long experience, and he will be able to tell us how to meet these brigantines, or perhaps even how to make one for service on the lake."

They descended from the tower, and in due course came upon Peter, looking wonderfully grand in his feathered cloak and native dress, for all had been reclothed, their own dress being torn to ribbons.

"'Tis out of the question, this thought of building a brigantine for use on the lake," he answered promptly. "You say that there is news that Cortes is now on his way here, and that fighting has commenced. A brigantine would take months to build, while something smaller would take almost as long. But we could contrive something with rafts of light material. Or better, my commandant, make stout boats by lashing some four or five of these canoes together. They do not use sails, but there is enough cotton here to make them; and a boat such as I describe should cut fast through the water, and stand a chance if it came to warfare. But the brigantines would knock her to pieces if she got in their way. That is where their advantage will be felt. None of these canoes will be able to stand against them."

"Then we will do what we can, and you shall take command on the water," said Roger. "We will go to Teotlili and the king and make our arrangements. Then I will appoint one each of our men to the bands of crossbow and lance-bearing soldiers, and let them carry on the training. There will be ample weapons, for all the artificers in the city have been at work."

By dint of strenuous labour Roger and his friends, with the able and cordial assistance of the king and Teotlili, managed to get together quite a respectable number of the Mexicans, and during the two days which they had free to themselves, and the few which followed during which Cortes and his allies marched down to the lake and visited Tezcuco, were able to appoint each one of the English men-at-arms or adventurers to the band. Then those who had already been trained in the use of the new weapons were divided up, and set to work to instruct their comrades. Meanwhile, Peter Tamworth had taken the matter of the boats in hand, and ere a day had passed had constructed some twenty broad canoes, lashing four of the native vessels side by side. Sails were a matter of greater difficulty, and it took time to teach the Mexicans to use them, for hitherto they had used the paddle alone. However, at the end of a week they were fairly proficient, and when at length the enemy did come in touch, had some confidence in themselves. It was an eventful day when Cortes marched down to Mexico, and took up his position, and a still more exciting moment when his men advanced to attack the forts which had been erected at the opening of the aqueducts.

"Let the men lie down behind the walls," said Roger, who was in command. "They are to take no notice of the cannon, and are to stay quiet till I give the order to rise. Even then those with the lance will remain where they are, for it is my object to lure these Spaniards on till they are at close quarters."

He took up a commanding post in the centre of one of the long walls which had been constructed, and watched the enemy closely. There were some three hundred Spaniards, and many thousands of their allies, and they advanced across the open directly against the wall, dragging their guns with them. Arriving within two hundred yards they halted, and after a little while the guns opened fire, the shot screeching over the wall, and falling into the lake behind. At the sound several Mexicans rose, and would have retired.

"Tell them that they will be instantly executed if they show fear," called out Roger to Teotlili, who was a few paces away. "How can cannon balls hurt when we have a thick wall to defend us? Bid them carry out my order."