In 1855, he was engaged by Sedgwick to assist in the Woodwardian Museum at Cambridge, and during the following three years he aided the professor by delivering lectures.
He was engaged by Sedgwick. This was in 1855. This was to assist in the Woodwardian Museum at Cambridge. He aided the professor by. This was during the following three years. This was in 1855. He was delivering lectures. This was during the following three years. This was in 1855.