The Logo for Lesson 18 is a "Calavera"

Question 18 SA-13. Here is the text reference (p. 172/3 to 4):

In response to our &laqno;good morning, general», he responded in a grim tone:

&laqno;Not good, my friends. We have too many empty sombreros».

I did not fully understand the meaning of that phrase, and I don't think Llorente did either. But while he kept the silence of true wisdom, I, with stupid haste, almost inciting a crime, said,

&laqno;We have too many what, General?»

He took a step towards me and replied with a careful and slow tone that showed that he was barely containing his rage:

&laqno;Too many empty sombreros, Licenciado. Don't you understand man talk? Or don't you realize that because of the Long-eared one (wait till I catch that bastard!) my boys are killing each other? Do you understand now why we have too many empty sombreros? Am I speaking clearly enough?»