Judge Mason, the new Commissioner of Pa tents, has not yet arrived in Washington. In the meantime the Chief Clerk is Acting-Com missioner. It is saidthat there is an immense army of office-seekers awaiting his Honor's ar rival at the seat of government. Is is intend ed by many to get the new Commissioner to make some new rules for the hearing of re jected applications, viz., that he will personal ly consider written arguments in reply to the rejections of the Examiners. In the mean time the Examiners appear to be working hard, as the long list of claims this week in our columns testify.