Chapter 21 - Futures Contracts and Clearing
319 Under Open, High, Low: the sentence should read:

The quote shows that the July Soybean contract opened at $5.80¼ per bushel During the day's trading the July contracts hit a high of $8.87¾ and a low of $5.74¾.

332 In figure 21-3 it should state:

The clearinghouse gives Susan her profit of $2,500 [ $218,000 - $215,500]
and the two contracts collapse into one:
Clearinghouse profit = - $2,500.