J. F. Tocher 
151 
boys and girls, however, appear to be different. The results for girls show that 
the whole of Scotland, excepting the West-Midland and South-Western divisions, 
are megalometropic or conversely — the Argyll and Lanark groups are micro- 
metropic, the proportion of fair hair in these divisions or groups being significantly 
less than that of the general population. Looking now at the inter-county and 
intra-county (district) differences it is seen that any megalometropic character in 
the Northern division is due to Orkney and Shetland and only very slightly to the 
east coast of Caithness. The following counties north of the Forth are signifi- 
cantly fair haired : viz. Stirling, Perth, Inverness, Ross, Cromarty, Nairn, Elgin 
and Banff. These are distinctly Highland counties or counties on the Highland 
line. Examining the districts it is seen that the region of the Cromarty Firth, 
the region immediately south of the Moray Firth, South Perthshire, South Forfar, 
except Dundee, the Isle of Lewis, Dunfermline district and the Trossachs, are the 
specific localities north of the Forth which are significantly fair. Skye and the 
adjacent mainland are also moderately fair. South of the Forth, Dumbarton 
(north of Glasgow), Ayr (south of Glasgow), Midlothian and the Border counties 
are megalometropic. Lanark, excluding Glasgow, is probably megalometropic. 
The specific localities significantly fair or megalometropic, south of the Forth, are 
North Ayr, North Lanark, Midlothian, Berwick and a portion of Roxburgh. On 
the whole the county distributions for boys and girls correspond. Haddington, 
Fife and Linlithgow are significantly fair haired counties in the girl population. 
In view of the fact that significant excess appears in so many large areas, one 
must enquire where the micrometropic population is. The most outstanding cases 
are the cities of Glasgow, Dundee, Leith and Greenock. The relative difference in 
Glasgow is so great (RLD = — 12"00 and — 24'17 for boys and girls respectively) 
as to point to exceptional circumstances with respect to this great city. The 
colour distribution is entirely different from any other part of Scotland. A sepa- 
rate section will therefore be devoted to Glasgow and to problems bearing on the 
relationship between density of the population generally and colour. Aberdeen 
city is like the general population, while Edinburgh is significantly fair haired, 
slightly more so than the surrounding population. Hawick, Airdrie, Dunfermline, 
Forfar, Hamilton, Dumbarton and Perth are megalometropic towns; Stirling, 
Kirkcaldy, Rutherglen, Montrose and Peterhead are micrometropic ; while Paisley, 
Kilmarnock, Ayr, Arbroath, Inverness, Falkirk, Dumfries, Dysart and Galashiels 
are mesometropic, i.e. these towns are like the general population. 
Generally speaking, excess of fair hair is found both in the Highlands and the 
Lowlands in Scotland, but it cannot be said that this class is characteristic of 
either — the distribution is far from uniform. In the Highlands, fair hair is more 
characteristic of the boundaries than of the heart of the Highland country. The 
Moray and Groniarty Firths, East Perthshire, the Trossachs, Dumbarton, Lewis, 
and East Caithness encircle and are mostly part of the Highlands, and these districts 
are significantly fair populations. The Borders, North Ayr, and parts of Lanark 
and Midlothian, as against Galloway, Selkirk, Peebles, Glasgow, and the region 
