Weather map map using his own system of symbols, thereby creating the world's first weather map. He used his map to prove that air circulated clockwise around areas of high pressure; he coined the term 'anticyclone' to describe the phenomenon. He was also instrumental in publishing the first weather map in a newspaper, for which he modified the pantograph (an instrument for copying drawings) to inscribe the map onto printing blocks. "The Times" began printing weather maps using these methods with data from the Meteorological Office. The introduction of country-wide weather maps required the existence of national telegraph networks so that data
Maria Perkins letter has become. This is what her child has become. It is a situation that no kind treatment can assuage, a wound of the soul that will never heal." The second chapter of Hager's book "Word by Word: Emancipation and the Act of Writing" (2013) explores Perkins's letter—a commonly cited example of slave writing—as a case study. According to Hager, high-school textbooks on US history which quote the letter emphasize different themes. Some focus on the toll of her heartsickness, while others highlight her strategic suggestions to reunite her family. Hager states that both aspects are present in the letter. Modern