These are becoming popular, in connection with public parks in England, and might with much propriety be introduced into our own country. Four or five acres are covered by glass, and plants almost hardy, and needing very little fire heat are grown in them. What would be more beautiful in our northern cities than gardens like these with Portugal Laurels, Bays, Camellias, Myrtles, and other things of that character, which will even bear some frost without injury, but with a slight protection would be beautiful all the winter long, and afford dry and healthy walking at all times.