I am a finger on a man’s hand, and am connected with a train of mechanism, which enab

I am a finger on a man’s hand, and am connected with a train of mechanism, which enables me to be lifted up and down, in order to enable me to be seen from the streets of a city, on the square of a country cross, or on the arm of a long street-knife, at the end of a railway station. My fellows are all connected in the same manner, and are long or short, black or white, plain or crooked, to suit the convenience of the various walking things which are attached to them. My immediate connection is called a wrist, and is attached to a man’s hand, on the inside of which I am connected with another set of mechanism, called an arm, which is attached to a still longer set of mechanism, called a rod,