British Literature Question

Chose two of the time periods below then, compare and contrast the manner in which a representative author from each period presents nature (ex: the phenomena of the physical word, collectively)You must include textual reference in your response

Anglo Saxon, Middle Ages, 16th Century,17th Century, 18th Century. Romanticism.

Link to the texts,

The Early Seventeenth Century, Donne 

http://www.online-literature.com/donne/371/

The Eighteenth Century, Swift

http://art-bin.com/art/omodest.html