Light Eyes in parts of Western and Southern Europe

[Ikiru]

I made a map from the data collected by Jacques Houdaille on the eye color of 28,000 Napoleonic conscripts (1810) in the French Empire and Switzerland.
Here is the original study: https://www.persee.fr/doc/ahess_0395...um_31_4_293747

[Supercomputer]

I made a map from the data collected by Jacques Houdaille on the eye color of 28,000 Napoleonic conscripts (1810) in the French Empire and Switzerland.
Here is the original study: https://www.persee.fr/doc/ahess_0395...um_31_4_293747

Give the numbers for parts of Italy and Switzerland it probably includes dark green/yellowish?

[Ikiru]

Give the numbers for parts of Italy and Switzerland it probably includes dark green/yellowish?

Well perhaps it includes dark green and yellowish. I'd say probably dark green. The figures for Belgium are a bit more than 5 points higher than those of Vanderkindere. The figures for Alsace-Moselle and the Rhineland are also about 5 points higher than those of Virchow. I consider the figures 58 and 54 in Central Italy to be errors due to small sample sizes. But doesn't a ~ 40 % figure for Liguria / Piedmont seem about correct for a country with a 30 % average ?
And how much do you expect for Switzerland? The sample for Switzerland alone is rather large (>4000).

[Supercomputer]

But doesn't a ~ 40 % figure for Liguria / Piedmont seem about correct for a country with a 30 % average ?

Yes according to Livi Liguria is 30% and Piedmont is 40%. I think Livi's numbers also likely include yellowish green (#8 Martin Schultz Scale) as explained by this guy here:

https://www.theapricity.com/forum/sh...=1#post5958718

Switzerland is 59% light according to Kollman (600.000 people) and 57% according to Schlaginhaufen (35.000 people). Kollman simply divided simply into blue, gray and brown, but Schlaginhaufen in very detail on Martin Scale.

[Supercomputer]

Yes according to Livi Liguria is 30% and Piedmont is 40%. I think Livi's numbers also likely include yellowish green (#8 Martin Schultz Scale) as explained by this guy here:

https://www.theapricity.com/forum/sh...=1#post5958718

Switzerland is 59% light according to Kollman (600.000 people) and 57% according to Schlaginhaufen (35.000 people). Kollman simply divided simply into blue, gray and brown, but Schlaginhaufen in very detail on Martin Scale.

Recalculated Schlaginhaufen numbers again and here are the results:

Switzerland eye color

light blue (15 & 16) 16%
blue (13 & 14) 9,34%
gray blue (11 & 12) 10,87%
gray (9 & 10) 8,58%
green (8) 7,96%
greenish (separate category) 9,42%
hazel (7) 8,65%
light brown (5 & 6) 13,88%
brown (4) 10,17%
dark brown (1- 3) 2,38%

erratic or other colors 2,73

Overall light and light-mixed eye is either 52,77 or 62,19% if you include "greenish". Interestingly the first number (without greenish) is almost exactly the same as in ToeKneeHwin's study, and blue + gray-blue (36,2%) almost exactly as his figure for "blue":

[Ikiru]

Recalculated Schlaginhaufen numbers again and here are the results:

Switzerland eye color

light blue (15 & 16) 16%
blue (13 & 14) 9,34%
gray blue (11 & 12) 10,87%
gray (9 & 10) 8,58%
green (8) 7,96%
greenish (separate category) 9,42%
hazel (7) 8,65%
light brown (5 & 6) 13,88%
brown (4) 10,17%
dark brown (1- 3) 2,38%

erratic or other colors 2,73

Overall light and light-mixed eye is either 52,77 or 62,19% if you include "greenish". Interestingly the first number (without greenish) is almost exactly the same as in ToeKneeHwin's study:

Yeah it seems right. I think Virchow also counted yellowish green otherwise there wouldn't consistenly be a 10 points drop across the border.

[Supercomputer]

Yeah it seems right. I think Virchow also counted yellowish green otherwise there wouldn't consistenly be a 10 points drop across the border.

Wow you are quick buddy Yes, that would explain Virchow's 3 percent difference with ToeKneeHwin.

[The Blade]

Recalculated Schlaginhaufen numbers again and here are the results:

Switzerland eye color

light blue (15 & 16) 16%
blue (13 & 14) 9,34%
gray blue (11 & 12) 10,87%
gray (9 & 10) 8,58%
green (8) 7,96%
greenish (separate category) 9,42%
hazel (7) 8,65%
light brown (5 & 6) 13,88%
brown (4) 10,17%
dark brown (1- 3) 2,38%

erratic or other colors 2,73

Overall light and light-mixed eye is either 52,77 or 62,19% if you include "greenish". Interestingly the first number (without greenish) is almost exactly the same as in ToeKneeHwin's study, and blue + gray-blue (36,2%) almost exactly as his figure for "blue":

Obviously Schlaginhaufen statistics is much more detailed and accurate than that of Kollman.
Eye color division is far more precise.
62,17% for all kinds of light eyes combined, 8,65% for the intermediate category of hazel and 26,43% for brown shades. Even statistic error is included.

[The Blade]

I made a map from the data collected by Jacques Houdaille on the eye color of 28,000 Napoleonic conscripts (1810) in the French Empire and Switzerland.
Here is the original study: https://www.persee.fr/doc/ahess_0395...um_31_4_293747

I find it interesting that two neighbouring regions of Italy have a difference of 28% (30 vs. 58) obviously according to the same criterion.

[Supercomputer]

Obviously Schlaginhaufen statistics is much more detailed and accurate than that of Kollman.
Eye color division is far more precise.
62,17% for all kinds of light eyes combined, 8,65% for the intermediate category of hazel and 26,43% for brown shades. Even statistic error is included.

I wouldn't say Kollman's statistics are less accurate. The numbers for blue, intermediate (gray) and brown (dark) fit with Schlaginhaufen pretty well. He also has a much higher sample size.

Kollman:

blue 16,1%
intermediate 43%
dark 39,7%

other 1,2%

Schlaginhaufen:

blue 16,02%
intermediate 43,42%
dark 37,83%

other 2,73%