The Last Journals of David Livingstone Volume I is a book written by Horace Waller, which is a collection of journal entries written by the famous Scottish explorer and missionary, David Livingstone. The book covers the period from 1866 to 1873, which is the period of Livingstone's final expedition to Africa.During this expedition, Livingstone set out to explore the region around Lake Tanganyika and to find the source of the Nile River. The journal entries in the book provide a detailed account of Livingstone's experiences during this expedition, including his encounters with various African tribes, his struggles with illness and exhaustion, and his observations on the natural environment and wildlife.One of the main themes of the book is Livingstone's commitment to his Christian faith and his desire to spread the Gospel in Africa. He often writes about his efforts to establish relationships with local tribes and to use his medical knowledge to provide aid to the sick and suffering.The book also provides insights into the political and social context of Livingstone's time. Livingstone was a strong opponent of the slave trade, and the journal entries in the book provide detailed descriptions of the horrors of slavery and the efforts of Livingstone and his colleagues to combat it.