The Gardener’s Magazine p. 190 (1826)

Charcoal Powder for packing Pinks and Carnations. Has any of your correspondents ever tried the effect of charcoal powder, to preserve the vitality of slips of pinks or carnations in their passage from one place to another? My Carthagena correspondent says, in a letter of the 28th of October last (just received), after speaking of the arracacha roots which he sent me packed in powdered charcoal, "some slips of carnations, similarly packed, which I received from Bogota, are now flourishing in the garden at Camepaga." The journey from Bogota to Carthagena occupies from six to ten or twelve days; and, if the charcoal was sufficient in that climate to preserve the slips in a growing state for so many days, I think the method might be expected to answer, in this climate, for the transmission of cuttings to and from various parts of the kingdom, as well as to and from all parts of the Continent: at all events, the suggestion is not amiss, and it might be worth while to reduce it to the test of experiment. William Hamilton. 15. Oxford Place, Plymouth, Feb. 17. 1828.