Looking through Mrs. Caroline A. Creevey’s charming book on the Flowers of Field, Hill, and Swamp, the other day, I was very forcibly reminded of the number of these pretty, wilding growths which I had been finding all the season long among the streets of asphalt and the sidewalks of artificial stone in this city; and I am quite sure that any one who has been kept in New York, as I have been this year, beyond the natural time of going into the country, can have as real a pleasure in this sylvan invasion as mine, if he will but give himself up to a sense of it.