The CSF occupies the subarachnoid space (between the arachnoid mater and the pia mater) and the ventricular system around and inside the brain and spinal cord. It constitutes the content of the ventricles, cisterns, and sulci of the brain, as well as the central canal of the spinal cord.
The MOST important fact is that ONLY ONE Article V application is required from each of 34 different states to require Congress to call an Article V Convention, and 49 of all 50 of the states have already filed at least ONE Article V application.
They decided to drop the matter. Instead, on September 28, Congress directed the state legislatures to call ratification conventions in each state. Article VII stipulated that nine states had to ratify the Constitution for it to go into effect. Beyond the legal requirements for ratification, the state conventions fulfilled other purposes. The Constitution had been produced in strictest secrecy during the Philadelphia convention.