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.
Take a pint of water and add an eighteenth part of sulphuric acid, and dip the newly cut flowers into it singly, afterwards hanging them up to dry in an airy, shady place, when they will assume a beautiful red color. Zinnias, Pansies, Pelargoniums, Fuchsias, etc, may be dipped in a very thin gum and afterwards dried, care being taken that the leaves retain their natural position. Where the leaves happen to stick together they may easily be parted with a penknife.- Gardener's Chronicle.