Into the blue

Jenny Balfour Paul is an indigo dye expert. She has written two books on the subject, and lectures around the world. A librarian alerted her to the mention of the colour, and the plant it comes from, in the journals of a long-forgotten sailor and indigo hand. That day a ten-year love affair began.

Thomas Machell was born near York in 1824, a son of the manse. At the age of 16 he went to sea, scrubbing the decks of a merchant ship. After numerous adventures he settled in India, initially working for the Bengal Indigo Company, then transferring to plant and harvest coffee in Kerala. He was a curious, observant man who became fluent in both Arabic and Hindi, and, unlike many servants of the Raj, travelled widely off the beaten track. He crossed desert ridges from Suez to Cairo on a camel, for example, pacing first beside the new telegraph line and then the Nile.