aromatic oil.'  *Please note, pregnant women should never drink pennyroyal tea as it can cause contractions. I love the scent of this herb. 'During the  Civil War , some Valley soldiers chewed  slippery elm  bark when in battle or on the march. It was said to relieve thirst and hunger.' ">http://bethtrissel.files.wordpress.com/2010/11/buggy.jpg"> 'During