I think that the suffix is or.
-logy suffix or -ology suffix means "the study of". A lot of fields in different types of sciences ends in -logy denoting particular fields of study. An example to prove such conclusion or theory would be biology, the study of life. Sociology is the study of human structure. Anthropology is the study of humans.
Whittier had used symbolism and imagery of war in his poem "To William Lloyd Garrison" when he described the rural nature of the New England including its cultural atmosphere, as well as its religion. In addition, Whittier was among the most prominent poets wherein among his main subject was the American Civil War.
The answer to your question is Prose.
