said Rollo. "I think we had better finish it now. Come, Nathan, jump about here on the sled, and you will soon be warm."
So they went briskly at work again, Rollo taking the command. They found it very hard, after the second course, to get the snow-blocks up on the snowy wall. Often they would slip away out of their hands, just as they were lodging them safely on the top, and fall over on one side of the wall, and break to pieces.
"Let us cut them in two," said Oliver; "we can handle them better so."
Before they got through the fourth course, they were glad to cut all their materials into pieces of one foot square.
"How high are the walls now?" said Rollo, as they stopped to look at the appearance of the last course.
"Between five and six feet," said Oliver. "The foundation is at least a foot and a half high, and we have laid four courses."
Oliver, Rollo, and Nathan went to work together, then, stopping up all the chinks in the wall, inside and out, with soft snow.
When this was well done, Oliver took the hoe, and with the sharp edge shaved down all around on both sides, making the walls look even and true.
"Well," said Rollo, "that is the best snow fort I ever saw. Jonas does know how to do things, doesn't he, Oliver? But I don't see how we are to get a roof on."
"I don't care about a roof," said Oliver. "We don't want to play in it only in pleasant weather."