344 SECTIONAL TRANSACTIONS— E. 



Morocco — i.e. the lack of towns in the well-populated parts N. and W. 

 of the Atlas Mountains. 



Capt. J. G. WiTHYCOMBE. — Population maps. 



Need for showing the distribution of population on a map. 



Practical uses : social, administrative, commercial and political. 



Value as an instrument of research enhanced if it forms one of a series 

 of distribution maps uniform in scale and style and so readily comparable. 



Convenience and availability of the International 1/1,000,000 Series as 

 base maps for showing distributions of all sorts. 



The work done by the Sub-Committee of Section E of the British Associa- 

 tion which was appointed to consider the production of a Population Map 

 of Great Britain. 



The specimen map of Hampshire on the scale of 4 miles to i in. 



Reasons for adopting the 1/1,000,000 scale. 



Method of compilation. Scale of densities to show both rural and urban 

 conditions on map of the 193 1 Census. 



Possibility of producing a series of retrospective population maps illus- 

 trating the growth and drift of population during the past 120 years. 



Dr. E. H. Selwood. — The classification of communities by means of 

 occupations. 

 Some indefinite knowledge of types of towns has for years been con- 

 sidered part of geography, but the issue of exact figures of occupations in 

 the census returns has provided the possibility of ascertaining standards 

 for the classification of communities, rural and urban, and the purpose of 

 this paper is to define and classify the communities of England and Wales 

 on an occupational basis. 



First it was found necessary to reduce the thirty-three categories so skil- 

 fully arranged by the Registrar-General , and by adding occupations of similar 

 character to reach the following list of groups : fishers, land-workers, 

 miners, ' craftsmen,' transport-workers, traders, ' professionals,' ' servants ' 

 and clerk-storekeepers. 



For ease of comparison the numbers in each group were stated as per- 

 centages of the total number of workers in the community. 



It was thus found possible to classify the 1,719 communities of England 

 and Wales as : 



{a) Land-working, 

 {b) mining, 

 (c) ' craft,' 

 {d) transport, 

 (e) ' service,' 



(/) unspecialised or ' balanced ' ; with modifications of (a), {b), 

 (c) and (e). 



The distributions of communities of similar occupational character have 

 been mapped for the country as a whole, and London on a larger scale. 



Certain correlations between occupational groups have been found, and 

 the ratio of occupations in urban and the surrounding rural areas calculated . 

 ' Saturation-points ' of some groups have been ascertained. 



Afternoon. 

 Dr. G. W. Tyrrell. — The geographical distribution of volcanoes. 



Dr. J. Georgi. — Some geophysical results of Alfred Wegener's Greenland 

 Expedition, igjo-ji. 



