"This reduced the inflow from the average prior to 1921 of 176,983 from Northern and Western Europe, and 685,531 for other countries, principally Southern and Eastern Europe, to a 1924 level of 140,999 for Northern and Western Europe, and 21,847 for other countries, principally Southern and Eastern Europe (from a 1:3.9 ratio to a 6.4:1 ratio)." . . . .