His earliest notable work was on the structure of striated muscle, for which he was elected a Fellow of the Royal Society in 1841.[1] At the young age of 25, he identified what then became known as the Bowman's capsule, a key component of the nephron. He presented his findings in 1842 in his paper "On the Structure and Use of the Malpighian Bodies of the Kidney" to the Royal Society and was awarded the Royal Medal. His collaboration with Todd led to the publication of the five-volume "Physiological Anatomy and Physiology of Man" (1843–1856) and "Cyclopaedia of Anatomy and Physiology" (1852), which detailed their research on microscopy and histology, relating minute anatomical observations to physiological functions.