Answer:
The example of oxymoron in this excerpt is The Bookful Blockhead, ignorantly read
Step-by-step explanation:
Oxymoron is a literary device which uses two words that are totally opposite to create a third meaning in the context. The line "The Bookful Blockhead, ignorantly read" has the opposites Bookful and Blockhead as well as ignorantly and read, this talks about a person who read so many books but they don't understand any from them, or don't get any gain or advantage from the information in them.