diff -r 719931014d3a -r b9b4ae3f8351 text/blobdef.tex
--- a/text/blobdef.tex	Mon Jun 27 14:26:13 2011 -0700
+++ b/text/blobdef.tex	Tue Jun 28 17:13:47 2011 -0700
@@ -170,9 +170,13 @@
 Now, $\{A\}$ is a valid configuration of blobs in $A \cup B$, 
 and $\{D\}$ is a valid configuration of blobs in $C \cup D$, 
 so we must allow $\{A, D\}$ as a configuration of blobs in $[-1,1]^2 \times [0,1]$. 
-Note however that the complement is not a manifold.
+Note however that the complement is not a manifold. See Figure \ref{fig:blocks}.
 \end{example}
 
+\begin{figure}[t]\begin{equation*}
+\mathfig{.4}{definition/blocks}
+\end{equation*}\caption{The subsets $A$, $B$, $C$ and $D$ from Example \ref{sin1x-example}. The pair $\{A, D\}$ is a valid configuration of blobs, even though the complement is not a manifold.}\label{fig:blocks}\end{figure}
+
 \begin{defn}
 \label{defn:gluing-decomposition}
 A \emph{gluing decomposition} of an $n$-manifold $X$ is a sequence of manifolds