—Maize culture. a, The Egyptian plow, still widely used in Mexico (Nurio). Note straight steel tip (reja) which slips over endpiece of plow 
yoke and goad near end of tongue; leather strap used to fasten yoke to horns of oxen. 6, Planting maize near Caltzontzin. The first plow, which opens the 
furrow, is followed by two small boys, who drop seeds at regular intervals. The second plow covers the seeds. c, Contour plowing near Cuanajo. Field 
of youngmaize. d, Hillof maize and beansin hoe land near Chilchota. Plants are about 1 week old. Newly burned desmonte near Apo. Note wood ash, 
which will be mixed with underlying soil. f, Platform on which maize fodder (rastrojo) is stored, An 
