add file for chapter 13 to main.tex...

book-1/13.tex

@@ -0,0 +1,7 @@
+\chapter{13}
+
+Almost half of the day was spent in a state of shock between speechless horror,
+bewildered disbelief,
+and anger.
+Ten days?
+Apparently he laid there in a fever for \textit{ten days} without noticing it?

book-1/Main.tex

@@ -93,6 +93,7 @@ I'll need to go over it multiple times later anyway.
 \input{10}
 \input{11}
 \input{12}
+\input{13}
 
 
 \end{document}