That evening Beric had a long talk with Aska and four or five men from the coast accustomed to the building of large boats. The matter would be easy enough, they said, as the boats would not be required to withstand the strain of the sea, and needed only to be put together with flat bottoms and sides. With so large a number of men they could hew down trees of suitable size, and thin them down until they obtained a plank from each. They would then be fastened together by strong pegs and dried moss driven in between the crevices. Pitch, however, would be required to stop up the seams, and of this they had none.

"Then," Beric said, "we must make some pitch. There is no great difficulty about that. There are plenty of fir trees growing near the edges of the swamps, and from the roots of these we can get tar."

The men were all acquainted with the process, which was a simple one. A deep hole was dug in the ground. The bottom of this was lined with clay, hollowed out into a sort of bowl. The hole was then filled with the roots of fir closely packed together. When it was full a fire was lit above it. As soon as this had made its way down earth was piled over it and beaten down hard, a small orifice being left in the centre. In this way the wood was slowly converted into charcoal, and the resin and tar, as they oosed out under the heat, trickled down into the bowl of clay at the bottom. As little or no smoke escaped after the fire was first lighted, the work could be carried on without fear of attracting the attention of any bodies of the enemy who might be searching the country.

Two months passed. By the end of that time the intrenchment on the river bank had been made so strong that it could resist any attack save by a very large body of men. That on the island had also been completed, and strong banks thrown up at the only three points where a landing could be effected from boats.

The swamps had been thoroughly explored in the neighbourhood, and another island discovered, and on this three hundred men had been established, while four hundred remained on the great island, and as many in the camp on the river. There were over a thousand women and children distributed among the three stations. Three hundred men had laboured incessantly at the boats, and these were now finished. While all this work had been going on considerable numbers of fish and wildfowl had been obtained by barter from the Fenmen, with whom they had before had dealings, and from other communities living among the swamps to the north. Many of the Iceni, who came from the marshy districts of the eastern rivers, were also accustomed to fishing and fowling, and, as soon as the work on the defences was finished and the tortuous channels through the swamps became known to them, they began to lay nets, woven by the women, across the streams, and to make decoys and snares of all sorts for the wildfowl.

The framework for many coracles had been woven of withies by the women, and the skins of all the cattle killed were utilized as coverings, so that by the end of the two months they had quite a fleet of little craft of this kind. As fast as the larger boats were finished they were used for carrying cattle to the islands, and a large quantity of swine were also taken over.

During this time the Romans had traversed the whole country of the Iceni. The hamlets were fired, and all persons who fell into their hands put to death; but the number of these was comparatively small, as the greater part of the population had either moved north or taken to the woods, which were so extensive that comparatively few of the fugitives were killed by the search parties of the Romans. From the few prisoners that the Romans took they heard reports that many of the Iceni had taken refuge in the swamps, and several strong bodies had moved along the edge of the marsh country without attempting to penetrate it.

Aska and Beric had agreed that so long as they were undisturbed they would remain quiet, confining themselves to their borders, except when they sent parties to search for cattle in the woods or to gather up grain that might have escaped destruction in the hamlets, and that they would avoid any collision with the Romans until their present vigilance abated or they attempted to plant settlers in their neighbourhood.

Circumstances, however, defeated this intention. They learned from the Fenmen that numerous fugitives had taken refuge in the southern swamps, and that these sallying out had fallen upon parties of Romans near Huntingdon, and had cut them to pieces. The Romans had in consequence sent a considerable force to avenge this attack. These had penetrated some distance into the swamps, but had there been attacked and driven back with much slaughter. But a fortnight later a legion had marched to Huntingdon, and crossing the river there had established a camp opposite, which they called Godmancastra, and, having collected a number of natives from the west, were engaged in building boats in which they intended to penetrate the swamp country and root out the fugitives.

"It was sure to come sooner or later," Aska said to Beric. "Nor should we wish it otherwise. We came here not to pass our lives as lurking fugitives, but to gather a force and avenge ourselves on the Romans. If you like I will go up the river and see our friends there, and ascertain their strength and means of resistance. Would it be well, think you, to tell them of our strong place here and offer to send our boats to bring them down, so that we may make a great stand here?"