THE discovery that the remarkable flying dispersion of dandelion "clocks" may be innovative in future engineering projects, including flight, is exciting (“Humble seeds that inspire stealth drones? That’s just dandelion", The Herald, October 17), although I admit to some concern that boffins may be unfamiliar with the bed-wetting properties attributed in childhood to the plant the French know as le pissenlit.

R Russell Smith,

96 Milton Road, Kilbirnie.