Page:The Swiss Family Robinson (Kingston).djvu/124

90 So saying, I procured some wine and butter, and anointing the wing, which though hurt was not broken, I bound it up, and then took the bird to the stream where I fastened it by a long cord to a stake and left it to shift for itself. In a few days the wound was healed, and the bird, subdued by kind treatment, became rapidly tame.

While I was thus employed my sons were endeavouring to ascertain the height of the lowest branch of the tree from the ground. They had fastened together the long reeds they had brought with them, and were trying to measure the distance, but in vain: they soon found that were the rods ten times their length they could not touch the branch.

“Hillo [sic], my boys,” I said, when I discovered what they were about, “that is not the way to set to work. Geometry will simplify the operation considerably; with its help the altitude of the highest mountains are ascertained, we may, therefore, easily find the height of that branch.”

So saying, I measured out a certain distance from the base of the tree and marked the spot, and then by means of a rod, whose length I knew, and imaginary lines, I calculated the angle subtended by the trunk of the tree from the ground to the root of the branch. This done, I was able to discover the height required, and, to the astonishment of the younger children, announced that we should henceforth live thirty feet above the ground. This I wanted to know, that I might construct a ladder of the necessary length.

Telling Fritz to collect all our cord, and the others to roll all the twine into a ball, I sat down and taking the reeds, speedily manufactured half a dozen arrows and feathered them from the dead flamingo. I then took a strong bamboo, bent it and strung it so as to form a bow. When the boys saw what I had done they were delighted, and begged to have the pleasure of firing the first shot.