Fig. 2.—Detail from the Boturini MS., showing the commencement of the Aztec migration. From Left to Right: Aztlan on an island; the Aztec crossing the water; the date i. tecpatl; the city Colhuacan; eight other tribes, reading downwards, the Matlatzinca, Tepanec, Chicimec, Malinalca, Cuitlauaca, Xochimilca, Chalca, and Uexotzinca. (After Seler)