Complex sentence: John Brown (22 September 1810--11 May 1882) was a Scottish physician and essayist best known for his 3-volume collection "Horae Subsecivae" (Leisure Hours, 1858), which included essays and papers on art, medical history and biography.
Split into simpler sentences: John Brown (22 September 1810--11 May 1882) was a Scottish physician and essayist. "Leisure Hours" (1858), including essays and papers on art, medical history and biography.