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
Methods used to study memory of learning and memory in rodents has been employed in scientific research for a long time, and there are many experimental methods used. Generally tests of spatial memory employ maze designs where the rodent must run a maze in order to receive a food reward. Learning can be shown when the rodent reduces its average number of errors or wrong turns. Aversive techniques such as the Morris Water Maze can also be used to study spatial memory. The rat is placed in murky water surrounded by sheer walls containing spatial cues. Learning is shown when the rat swims a more