plz explain,thx

2. Consider the following entry in Thompson's Bank Note Reporter: a. The entry describes the bank notes issued by City Bank of New York. It says that genuine notes circulate a par. Were they a good medium of exchange - that is, did they function as money? b. Even though it was known that the City Bank notes circulate at par, why did merchants still need to have a copy of Thompson's Bank Note Reporter? That is, what other information did the Bank Note Reporter have that would be useful for merchants when deciding whether to accept a note presented as a City Bank