The other two meningeal layers are the arachnoid mater and the pia mater. The dura surrounds the brain and the spinal cord and is responsible for keeping in the cerebrospinal fluid.he other two meningeal layers are the arachnoid mater and the pia mater. The dura surrounds the brain and the spinal cord and is responsible for keeping in the cerebrospinal fluid.
For 50 years, the stairs carried fans of the five city sports teams to and from the Polo Grounds in Harlem, until they finally rusted away in the years following the stadiumâs demolition, in 1964. John T. Brush, who built the stairway and donated it to the city, died the year before it opened to the public.
The botanical gardens in Balboa Park in San Diego, Calif., boasts beautiful flora, including orchids, begonias, ferns and other colorful plants. Wicker-bodied electric vehicles were designed to parade around the Panama-California Exposition grounds in Balboa Park between 1915 and 1916, Ingram writes. Mary Knox Merrill/The Christian Science Monitor/File.