The underlined phrase <em>in the pool </em>modifies, or refers to the word A. chlorine.
What is in the pool water? The chlorine.
On June 5, 1956, the District Court ruled 2-1, with Lynne dissenting, that bus segregation is unconstitutional under the Equal Protection Clause of the 14th Amendment to the U.S. Constitution. The state and city appealed, and the decision was summarily affirmed by the United States Supreme Court on November 13, 1956.
