Flatworms also have a feature that the sponges and cnidarians do not, a middle layer of actual organized cells. Flatworms have three cell layers: an ectoderm, an outer covering like the other groups have; an endoderm, a lining of the digestive spaces somewhat like a cnidarians; and a mesoderm between the other two. With actual tissues protected like this, another evolutionary explosion of features happened.
Buying a home in Fredericktown, PA. Fredericktown is a city in Washington County, Pennsylvania. Last year, 2 properties were sold for a median price of $49,000. Average price for a home in Fredericktown, PA is $49,000. The average property tax is $1,186 per year.
In 1850, the village of Morristown was established. It was renamed Henryville in 1853 to honor Colonel Henry Ferguson, who was once a colonel in the Pennsylvania militia. He purchased the land on which Henryville was established, and helped persuade Pennsylvania Railroad officials to run the line through Clark County. The Henryville post office was established in 1865.