REPORT ON ATMOSPHERIC CIRCULATION. 47 



In preparing the tables of pressure, temperature, and wind, the aim has been to 

 make the selection of stations represent fairly well the more important climatological 

 features of the region under discussion. There are, however, large regions where the 

 data are given with a greater fulness than this, such as the British Islands, Denmark, 

 Holland, Spain, Italy, Cyprus, India, the United States, and the Argentine Eepublic. 

 This is done for the purpose of showing more in detail, than the charts .can show 

 from their size, the influence of land and water, mountains and plains, on the 

 climatic problem. As regards Denmark, the means, particularly of the wind, have 

 been more fully worked out, owing to the position of this country between the 

 mountains of Scandinavia and the mountains to the south of it, and the important 

 resulting consequences of that position on the tracks of the cyclones and anticyclones 

 of Europe. 



Another object aimed at in the fuller discussion given to certain countries, was 

 a search for guiding information as to the influence of land and water, plain and 

 mountain on these lines, in order that the most probable course might be assigned to 

 the isobars and isothermals in those parts of the globe where observations are too few 

 and far between to serve of themselves for the drawing of these lines. 



In drawing the isothermals and isobars and entering the arrows showing the pre- 

 vailing winds on the maps, much of the information contained in the following works 

 has been utilised, in addition to what is given in the Tables : — 



Contributions to our knowledge of the Meteorology of Cape Horn and the West Coast of South 

 America, by Richard Straehan. Contributions to our knowledge of the Meteorology of the 

 Antarctic Regions, by Richard Straehan. Charts of Meteorological Data for Square 3 Lat. 0° 

 to 10° N., Long. 20° to 30° W. Charts of Meteorological Data for the nine 10° Squares of the 

 Atlantic which lie between 20° N. and 10° S., and extend from 10° to 40° W. Contributions to 

 our knowledge of the Meteorology of Japan, by Captain Tizard, H.M.S. Challenger. Contributions 

 to our knowledge of the Meteorology of the Arctic Regions, by Richard Straehan. Charts of 

 Meteorological Data for the ocean district adjacent to the Cape of Good Hope. Charts showing 

 the Mean Barometrical Pressure over the Atlantic, Indian, and Pacific Oceans, by Lieutenant 

 Baillie, R.N. Published under the authority of the Meteorological Council. 



"Weather Charts of the Bay of Bengal and adjacent sea north of the Equator. Weather Charts of 

 the Arabian Sea and the adjacent portion of the North Indian Ocean. Published by the Meteoro- 

 logical Department of the Government of India. 



Various publications on Ocean Meteorology and on Ocean Routes, issued by the Meteorological 

 Institutes of Holland, Germany, France, and Norway. 



The Winds of the Globe, by Professor Coffin and Dr. Alexander Woeikof. Published by the Smith- 

 sonian Institution. As regards this large, work, it is only the more important data referring to the 

 oceans which has been utilised. 



And also for the Winds, the Meteorological Charts of the. North Pacific Ocean from the Equator to 

 Lat. 45° N, and from the American Coast to Long. 180°. By Commodore Wyman, U.S. Navy, 

 Washington, 1878. 



