Commit ad7c7f17b70edcb19e5ffbfc2d852f854d8a661b Parent 71907d33e4b23eb6248a8ec664e0c04a12723630 Author John MacFarlane <jgm@berkeley.edu> Date Wed, 14 Jan 2015 08:08:48 -0800 Removed defective Example 449. Closes #284.