"Well, aunt, there is your wood cellar below. We can surely construct some place of concealment there. Of course I will do the work, though the girls might help by bringing up baskets of earth and scattering them in the streets." Having received a tacit permission from his aunt, Ned went down into the wood cellar, which was some five feet wide by eight feet long. Like every place about a Dutch house it was whitewashed, and was half full of wood. Ned climbed over the wood to the further end. "This is where it must be," he said to the girls, who had followed him. "Now, the first thing to do is to pile the wood so as to leave a passage by which we can pass along. I will get a pick and get out the bricks at this corner." "We need only make a hole a foot wide, and it need not be more than a foot high," Lucette, the elder, said. "That will be sufficient for us to squeeze through." "It would, Lucette; but we shall want more space for working, so to begin with we will take away the bricks up to the top. We can close it up as much as we like afterwards. There is plenty of time, for it will be weeks before the city is starved out. If we work for an hour a day we can get it done in a week." Accordingly the work began, the bricks were removed, and with a pick and shovel Ned dug into the ground beyond, while the girls carried away the earth and scattered it in the road. In a fortnight a chamber five feet high, three feet wide, and six feet long had been excavated. Slats of wood, supported by props along the sides, held up the roof. A quantity of straw was thrown in for the girls to lie on. Frau Plomaert came down from time to time to inspect the progress of the work, and expressed herself well pleased with it. "How are you going to close the entrance, Ned?" she asked. "I propose to brick it up again three feet high, aunt. Then when the girls and you have gone in--for I hope that you will change your mind at the last--I will brick up the rest of it, but using mud instead of mortar, so that the bricks can be easily removed when the time comes, or one or two can be taken out to pass in food, and then replaced as before. After you are in I will whitewash the whole cellar, and no one would then guess the wall had ever been disturbed. I shall leave two bricks out in the bottom row of all to give air. They will be covered over by the wood. However hard up we get for fuel we can leave enough to cover the floor at that end a few inches deep. If I can I will pierce a hole up under the board in the room above this, so as to give a free passage of air." "If the Spaniards take away the wood, as they may well do, they will notice that the two bricks are gone," Mrs. Plomaert objected. "We can provide for that, aunt, by leaving two bricks inside, whitewashed like the rest, to push into the holes if you hear anyone removing the wood. There is only the light that comes in at the door, and it would never be noticed that the two bricks were loose."