"But now I begin to be tired of writing. I should have been tired a great while ago, only I have stopped to rest pretty often, and to look out the window, and see what is going by on the canal.
"There is a boat coming now with a mast, and I don't see what they are going to do, for there is a bridge here, and it is not a draw bridge. Almost all the bridges are draw bridges, but this one is not. So I don't see how he is going to get by.
"Ah, I see how it is! The mast is on a hinge, so that it can turn down backward, and lie along flat on the deck of the boat. It is going down now.
"Now it is down, and the boat is going under the bridge.
"But good by, mother, for it is time for me to stop.
"Your affectionate and dutiful son,
"Rollo.
"P. S. This is the longest letter that I ever wrote."