Report of National Museum, 1 886.— Watkins. 



Plate II. 



is W 



Fig. I. 



Fig. 3 



Details of Track, Camden and Amboy Railroad, 1831. 



Fig. 1. Iron tongue to hold rails together at joints ; one tongue only used at each joint. 

 Fig. 2. Iron rivets (put on hot) to join tongue to stem of I-rail— two rivets used at each joint. 

 Fig. 3. "Hook-headed spike," so called because the head only extended beyond one side. It was de- 

 signed to fasten the base of the rail to tlie stone block without a chair. 



