Serpents, [738].

Serpula, [385], [505].

Serres, Marcel de, researches of, [557].

Sertularia, [253].

Shalcombe, Isle of Wight, [421].

Shanklin, or Lower Greensand, [25].

Sharks, fossil teeth of, [582].

------ vertebræ of, [596].

Sharp Mountain, Pennsylvania, [749].

Shepherd’s crowns, [327].