For the balance due on the purchase of a tractor, Henry Brown executed and delivered to Jane Jones his promissory note containing the following language:
January 1, 2010, I promise to pay to the order of Jane Jones the sum of $7,000 to be paid only out of my checking account at the XYZ National Bank of Pinckard, Illinois, in two installments of $3,500 each, payable on May 1, 2010, and on July 1, 2010, provided that if I fail to pay the first installment on the due date, the entire sum shall become immediately due. (Signed) Henry Brown Is the note negotiable? Explain.