(38) 
CHAPTER 10. 
Concluding Observations on the foregoing Chapters. 
I sHatu now add a few short observations, con- 
nected with the facts which have been stated above, 
and which have suggested themselves from time to 
time, in the course of my investigation. — 
Permit me to remark, then, that a great variety 
of Organic Remains, such as Madreporites, Corallites, 
Trochites, Entrochites, Encrinites, Orthoceratites, Ser- 
pulez, and Shells, both Univalves and Bivalves, are 
blended with, and form a very considerable part of 
the contents of the calcareous rocks of Plymouth, 
and will justify us in assigning them a place among 
