Mercury indicates mathematicians, traveling agents, poets, advocates, printers, publishers, orators, ambassadors, clerks, astrologers, travelers, secretaries, interpreters etc. In Mythology, Mercury is regarded as the god of eloquence and commerce. Mercury strong and favorably placed, makes one an orator.
Mercury is the planet of wisdom. Favorably posited it makes a person very intelligent, wise and studious.
Literary men, accountants, school teachers, secretaries, book-sellers, clerk, postmen, messengers, engineers, radio, wireless, telegraph, post, letters, typing, press, paper, cotton, representative, secretary, agent, astrologer, trade of foreign goods, import-export, thread, mercury, tin, auditing, able lawyer, expert, commissioners, ambassadors etc., are all ruled by Mercury.