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.
Polo is a sport that is played outdoors on a field as big as 10 football fields. The reason for this is that polo players play the game while riding on horses. This sport takes a lot of skill and requires players to control their horses with one hand and strike at the ball with the other. Players must also take care that they don't crash their horses in to each other when galloping at a high speed.