'And what are those things at all?' demands my companion, diverted for a moment from the flowers. She nods towards a mass of dull-green affairs piled on mats or being lifted from big vans. She is a Cockney and displays surprise when she is told those things are bananas. She shrugs and turns again to the musk-roses, and forgets. But to me, as the harsh, penetrating odor of the green fruit cuts across the heavy perfume of the flowers, comes a picture of the farms in distant Colombia or perhaps Costa Rica. There is nothing like an odor to stir memories.