Celebrating a new painted portrait of Joseph Banks, Sarah Engledow spins a yarn of the naturalist, the first kangaroo in France and Don, a Spanish ram.
The portrait of Dr. Johann Reinhold Forster and his son George Forster from 1780, is one of the oldest in the NPG's collection.
Shipmates for years, James Cook and Joseph Banks each kept a journal but neither man shed light on their relationship.