In Dominica he spent much time with fellow-Scot and fellow-plantation-owner, Dr James Laing, who owned the Shillingford Estate which made Macoucherie Rum.
In 1793 an epidemic of yellow fever, one of the most lethal tropical diseases of its day, hit Dominica, beginning on 15 June, from a white sailor in the harbour, having originated in Grenada on the ship Hankey.
[3] Dr Clark made a first-hand study of the outbreak, which lasted three years and published his findings in 1797.
[4] It also made a chemical analysis and assessment of the curative properties of the hot mineral springs on the island.
[5] James also observed that newcomers (regardless of race) were particularly susceptible to yellow fever, hinting at a degree of immunity within the static population.
George was one of the many thousands of persons compensated when Britain passed the Slavery Abolition Act 1833.