“Bowman’s capsule”. Bowman provided convincing evidence that the glomerular corpuscle is continuous with the renal tubule and gave the first adequate description of the vascular supply of the nephron. He described the afferent and efferent arterioles as they enter and emerge from the capsule which now bears his name. In the same paper he stated his theory of renal secretion. Bowman’s work became the basis for all future studies on the physiology of the kidney. Reprinted in Med. Classics, 1940, 5, 258-91.