I don't know anything sweeter than this leaking in of Nature through all the cracks in the walls and floors of cities. You heap up a million tons of hewn rocks on a square mile or two of earth which was green once. The trees look down from the hill-sides and ask each other, as they stand on tiptoe,--"What are these people about?" And the small herbs at their feet look up and whisper back,--"We will go and see." So the small herbs pack themselves up in the least possible bundles, and wait until the wind steals to them at night and whispers, "Come with me." Then they go softly with it into the great city,--one to a cleft in the pavement, one to a spout on the roof, one to a seam in the marbles over a rich gentleman's bones, and one to the grave without a stone where nothing but a man is buried,--and there they grow, looking down on the generations of men from mouldy roofs, looking up from between the less-trodden pavements, looking out through iron cemetery- railings. Listen to them, when there is only a light breath stirring, and you will hear them saying to each other,--"Wait awhile!" The words run along the telegraph of those narrow green lines that border the roads leading from the city, until they reach the slope of the hills, and the trees repeat in low murmurs to each other,--"Wait awhile!" By-and-by the flow of life in the streets ebbs, and the old leafy inhabitants--the smaller tribes always in front--saunter in, one by one, very careless seemingly, but very tenacious, until they swarm so that the great stones gape from each other with the crowding of their roots, and the feldspar begins to be picked out of the granite to find them food. At last the trees take up their solemn line of march, and never rest until they have encamped in the market-place. Wait long enough and you will find an old doting oak hugging a huge worn block in its yellow underground arms; that was the cornerstone of the State-House. Oh, so patient she is, this imperturbable Nature! --Let us cry!-- But all this has nothing to do with my walks and talks with the schoolmistress. I did not say that I would not tell you something about them. Let me alone, and I shall talk to you more than I ought to, probably. We never tell our secrets to people that pump for them.