diff -r 38ec3d05d0d8 -r 294c6b2ab723 text/intro.tex
--- a/text/intro.tex	Tue Nov 02 06:38:40 2010 -0700
+++ b/text/intro.tex	Thu Nov 04 17:02:06 2010 +0900
@@ -277,7 +277,7 @@
 \end{equation*}
 \end{property}
 
-Properties \ref{property:functoriality} will be immediate from the definition given in
+Property \ref{property:functoriality} will be immediate from the definition given in
 \S \ref{sec:blob-definition}, and we'll recall it at the appropriate point there.
 Properties \ref{property:disjoint-union}, \ref{property:gluing-map} and 
 \ref{property:contractibility} are established in \S \ref{sec:basic-properties}.