Complex sentence: James Sykes Gamble FRS (1847--1925) was an English botanist who specialized in the flora of the Indian sub-continent; he became Director of the British Imperial Forest School at Dehradun, and a Fellow of the Royal Society.
Split into simpler sentences: James Sykes Gamble FRS (1847--1925) was an English botanist who specialized in the flora of the Indian sub-continent. He was Director of the British Imperial Forest School at Dehradun, and a Fellow of the Royal Society.