REMARKS ON THE CHARTS. 



BY 



M. W. CAMPBELL HEPWORTH, C.B., R.D., COMMANDER R.N.R. 



THE COLLECTION OF THE DATA. 



TN connexion with the scheme of International Antarctic Exploration, inaugurated at tho beginning of 

 this century, which attained its fulfilment during the years 1901-04, arrangements were made by the 

 British Meteorological Office and the Deutsche Seewarte conjointly, prior to the departure for the Far 

 South of the British and German Expeditions, with a view to obtaining synchronous observations at 

 Noon G.M.T. of barometric pressure, air temperature, and wind frequency, during the period October, 

 1901, to March, 1903, for Latitudes South of the 30th parallel of South Latitude. 



For this country special registers, in a form agreed upon by the British an<i Herman Antarctic 

 Committees, were issued to the Ships of H.M. Navy through tho Office of the Hydrographrr (the late 

 Kear-Admiral Sir W. J. L. WHARTON, K.C.B.). A circular letter, issued by the Meteorological Council to 

 marine observers in correspondence with the Office and others engaged on Southern voyages, solic 

 their co-operation in this work, met with a ready response, and a large number of rr-i-t.- were 

 distributed among the Commanders of Ships visiting the Southern Ocean, and numerous contributions 

 resulted. Subsequently the period originally specified was extended to 31st March, 1904, in consequence 

 of the detention of the "Discovery" in McMurdo Sound, South Victoria Laud. 



The Observatories of the Colonies in the Southern Hemisphere contributed valuable records and 

 observations in response to an invitation by the Koyal Society. 



By an arrangement between the Meteorological Office and the Deutache Seewarte, an exchange 

 observations, recorded on board ships from which contributions on the special Registers were rece 

 the respective Bureaux, was effected. In addition to the data thus collected by the Office a larg 

 of observations at noon G.M.T. were obtained from the "Discovery," "Morning," 

 Scotia," relating to the passages of these vessels to and from the Antarctic and while cnusing in Ant 

 Seas ; also from many stations in Cape Colony, Australasia, South America, Tierra del Fuego, ai 



Island. 



As regards information from stations in, and in the neighbourhood of, Antarcti 

 meteorological records kept at Winter Quarters of the "Discovery" in McMurdo S.-un, 

 were obtained relating to the "Gauss" station of the German Expedition, near Kaiser \\ i. 

 Laurie Island-South Orkneys, and Snow Hill Island-Palmer Land, through the Don 

 the German, Scottish, and Swedish Antarctic Expeditions, Professor vox DRYGALS 

 and Dr. OTTO NORDENSKJOLD, respectively. 



Upon the information thus obtained are based the Daily Synchronous Charts of 

 Noon G.M.T., with winds and air temperature, as well as the Charts of mean month 

 temperature, and the Tables of average wind and gale frequency. 



The list of contributors is as follows : 



SHIPS of the Koyal Navy (H.M.S.), Exploring Vessels (E.S.), Steamship, (S.S.), and Sailing Vessels (S.) of 

 the Mercantile Marine, from which Observations were 



Alnwick Catle .... SA 



f t , cj. JLIUUUU 



- B 



Aberdeen S.S. 



Adolphe S. 



Afric. ..,.,:. S.S. 



AHnlf Alauda s - 



Alcinous S. Al.U.rdMnm 



... g Altair s - 



Adolphe S- Alexandra 



Alliance Sl 



Amphion ...... H.M.S. 



