[Caipirabob]

They were capable of performing successful basic neurosurgery as long as it wasn't too invasive beyond the surface of the brain itself. I would recommend a book called "Aztec" by Gary Jennings. You can buy in 2nd hand on Amazon for pennies. It's about the Aztec culture just prior, during and in it's twilight during the Spanish conquest of their nation.

The book is written from the perspective of the Papal records and then from the point of view of one of the surviving Aztec scribes. Brutal story, but rich in well researched facts.

Fascinating culture, great food and as my lovely wife is descended of the Chibcha people, I've got a personal connection in researching what history wasn't completely destroyed by the Spaniards.

[Sawdring]

I read the History of the Conquest of Mexico by William H. Prescott and found it to be very well written a pleasure to read. I know some of his information is dated but he brings the Aztec civilization into color.