copy collection graffle diagram

book.tex

@@ -2485,7 +2485,7 @@ $\Rightarrow$
   (movq (int 46) (stack -8))
   (movq (reg rbx) (stack -16))
   (addq (int 7) (stack -16))
-  (movq (stack 16) (reg rbx))
+  (movq (stack -16) (reg rbx))
   (addq (int 4) (reg rbx))
   (movq (stack -16) (stack -16))
   (addq (stack -8) (stack -16))
@@ -3900,8 +3900,8 @@ and second element is a 2-tuple.
 
 \begin{figure}[tbp]
 \centering
-\includegraphics[width=0.9\textwidth]{CopyingCollector} \\
-\includegraphics[width=0.9\textwidth]{CopyCollector2}
+\includegraphics[width=0.95\textwidth]{copy-collect-1} \\
+\includegraphics[width=0.95\textwidth]{copy-collect-2}
 \caption{A copying collector in action.}
 \label{fig:copying-collector}
 \end{figure}