Complex sentence: Soon after arriving in Baltimore Osler insisted that his medical students attend at bedside early in their training: by their third year they were taking patient histories, performing physicals and doing lab tests examining secretions, blood and excreta.
Split into simpler sentences: Soon after arriving in Baltimore, Osler insisted that his medical students attend at bedside early in their training. By their third year they were taking patient histories, performing physicals and doing lab tests examining secretions, blood and excreta.