Türk Secrets
Khiva khan Abu al-Ghazi Bahadur wrote in his Chagatai language treatise Shajara-i Tarākima (Genealogy of your Turkmens) that "their chin started to turn out to be narrow, their eyes began to turn into big, their faces began to grow to be small, and their noses started to turn out to be significant' after 5 or 6 generations". Ottoman historian Must