This section is from the book "The Gardener's Monthly And Horticulturist V18", by Thomas Meehan. See also: Four-Season Harvest: Organic Vegetables from Your Home Garden All Year Long.
This element is considered a purifier of the atmosphere. Where there is a deficiency there is disease. .A Dr. Mantogazza of Pavia, finds that odoriferous flowers throw off ozone largely on exposure to the sun, and therefore this is the great mission of odor in leaves and flowers. It is at any rate a new argument for flower culture in cities.