High Quality Content by WIKIPEDIA articles! James Ronald Leslie Macdonald (1862–1927) was a Scottish engineer, explorer and cartographer. He served as a British Army engineer, rose to the rank of Brigadier-General and was knighted. A balloon observer as a young man, he surveyed for railways in India and East Africa, explored the upper Nile region, commanded balloon sections during wars in South Africa and China and led a major expedition into Tibet in 1903–1904.