Plate IX. Set of IHOl), Wickford. Siieeimens taken between 

 July 1st and July 12tli, 1!)()(), from shallow water. Avera^-e, July 

 1st, lilOO, (i().r)inm. These all show the "line of o-rowth," Avhieh 

 only made its ai>])earanee at the time of sjiawuing-. After spawu- 

 ing the growth of the shell goes ou rapidl}".' 



