The Business Letters of the Shorthand manual which the student has not finished at the end of second month, he or she continues with this third month, until the 18th day of Business Letters of page 159 of the Shorthand manual is satisfactorily-completed without more than three mistakes any one day, the student remaining in speed class during full time, taking, as far as possible, everything read therein, whether dictated to other students or the class generally, and getting also the regular typewriting practice of half hour morning and 20 minutes afternoon from his or her typewriting pamphlets.