Complex sentence: Ruskin admired his draughtsmanship, and so Collingwood went to the Slade to study, between 1876 and 1878, he exhibited at the Royal Academy in 1880.
Split into simpler sentences: Ruskin admired his draughtsmanship, and so Collingwood went to the Slade to study art between 1876 and 1878. He exhibited at the Royal Academy in 1880.