The book comprises the observations made by the author during his stay from August 1816 up to Feb 1820 as part of the medical staff of the Army. The book is in 3 parts: the first consist of 10 chapters that consist of a description of the physical and natural history of the Island, the Political History, Religion, Literature, the Domestic Manners. The second part is a narrative of the author travels in the Island and finally the 3 part offers observations on the climate and on the diseases of Ceylon.