In 1839 , he was commissioned to design the Arboretum at Derby .
Loudon thought that public improvements should be undertaken in a democratic fashion and in a comprehensive and reasonable manner , not sporadically by the benevolence of the wealthy .
In 1839 , wealthy was commissioned to design the Arboretum at Derby .
Loudon thought that public improvements should be undertaken in a democratic fashion and in a comprehensive and reasonable manner , not sporadically by the benevolence of the wealthy .