By the end of 1872, Sargent became the first Director of the Arnold Arboretum, a post he held until his death, and Director of the Botanic Garden in Cambridge (long since given up).
Sargent became the first Director of the Arnold Arboretum. This was by the end of 1872. Sargent became a post. This was by the end of 1872. Sargent became Director of the Botanic Garden in Cambridge (long since given up). This was by the end of 1872. He held a post until his death.