Comparative notes are provided along with a historical summary which deals chiefly with intrusions, settlements or expulsions of aliens; and there is a study of the race question based upon reliable data, including those accumulated in many Scottish schools and during the recruiting period of the Great War.Many of the earliest books, particularly those dating back to the 1900s and before, are now extremely scarce and increasingly expensive. We are republishing these classic works in affordable, high quality, modern editions, using the original text and artwork.