Complex sentence: At the age of 23 he became medical superintendent at the Manchester Royal Lunatic Asylum in Cheadle Royal, returned to London in 1862, and was a professor of Medical Jurisprudence at his own college from 1869 to 1879.
Split into simpler sentences: At the age of 23 he became medical superintendent at the Manchester Royal Lunatic Asylum in Cheadle Royal. He returned to London in 1862 and was a professor of Medical Jurisprudence at his own college from 1869 to 1879.