212 Pigmentation Survey of School Chikhen in Scotland 
and in Glasgow generally, for the excess of dark eyes is common practically over 
the whole of Glasgow although it is more highly significant in Tradeston, Govan, 
Anderston, Milton, and Bridgeton ? I think this is unlikely. There must be some 
other factor or factors besides mere immigration from the Scottish Midlands. 
What are they ? 
(7) The Foreign Population of Glasgow. It was shown in the last section that 
the correlation between foreigners and density of population was very high. It 
was so high that on comparing foreigners and density of population separately with 
pigmentation, the same conclusion was reached for each. It could not however be 
said whether foreign immigrants were causing the excesses in the three classes 
named by their great numbers or whether the excesses were there independently 
of them, for, since foreigners came mainly to towns, it might be only through 
density as the common link that the correlation existed at all. The association 
between foreigners and density is however real. Foreign immigrants are likely to 
be found to reside in greater numbers in the most densely populated areas and in 
the smallest houses. Now it is very suggestive that, at the last Census, 9644 
foreigners or 42'6 per cent, of the total number of foreigners in Scotland (22,627 
in 1901) resided in Glasgow alone. It is also suggestive that of the great cities 
Glasgow is by far the most densely populated. The following table gives the 
relative densities of the chief towns in Scotland : 
TABLE LIII. 
Number of Persons per Square Mile in the Chief Towns of Scotland. 
Town 
Persons per 
Square Mile 
Town 
Persons per 
Square Mile 
Pollockshaws 
43,177 
Coatbridge 
12,830 
Greater Glasgow . . . 
39,331 
Musselburgh 
12,826 
Leith 
33,787 
Alloa 
12,661 
Rutherglen 
30,537 
Kirkcaldy 
12,515 
Dundee 
28,0G9 
Bai-rhead 
11,916 
Johnstone 
27,859 
Dumbarton 
11,387 
Port Glasgow 
24,289 
Falkirk 
11,223 
Motherwell 
21,978 
Perth 
11,031 
Edinburgh 
20,089 
Peterhead 
10,991 
Greenock 
18,598 
Inverness 
10,514 
Fraserburgh 
17,510 
Galashiels 
10,085 
Kilmarnock 
17,125 
Ayr 
9,177 
Hamilton 
15,750 
Brechin 
9,086 
Aberdeen 
15,716 
Stirling 
8,552 
Clydebank 
14,959 
Dunfermline 
8,016 
Dumfries 
14,726 
Kirkintilloch 
7,992 
Wishaw 
14,535 
Forfar 
7,444 
Bo'ness 
13,889 
Montrose 
5,422 
Airdrie 
13,598 
Renfrew 
3,742 
Hawick 
13,434 
Irvine 
3,429 
Arbroath 
13,075 
Rothesay 
2,461 
