inhabited the sea-bottom (where now stands the Agricultural College) 



at the period this clay was accumulated. 



The nature of these fossils will be seen by the following list :— 



Plants, number of species . . 2 



Sponges . . . . . . . . 1 



Radiate animals, 



Corals, about . . . . 14 



Crinoid star-fishes . . . . 3 



Star-fishes .. .. 1 



Sea-urchins, about.. .. 10 



28 



Articulate animals, 



Anellides, about . . . . 7 



Crustaceans . . . . 1 



Molluscous animals, 



Bivalves 23 



Terebratulse . . . . 10 



Spiral univalves . . . . 8 



Ammonites (fragment) . . 1 



Vertebrate animals, 



Fishes, about . . . . 19 



Reptiles . . . . . . 7 



42 



26 



Total .. .. 107 



The vegetable rSmains consist of drift wood, as hard and brittle as 

 coal, and a single small Nullipore, the only genus of marine plants 

 capable of living at a depth exceeding 30 fathoms. 



The sponge is a minute species, belonging to a group having a 

 calcareous skeleton. 



The corals are small species, such as are found in deep water ; 

 the only large reef-building species belongs rather to the Great 

 Oolite, and covered in some places the bed of the sea upon which 

 the animal of the Bradford clay period lived. 



The Crinoids include a species of Comatula, one of which still inhabits 

 our coasts, being attached to sea- weed in its young state, and becoming 

 afterwards detached, and capable of swimming about in the sea. 



The Amellides are maraino worms, forming shelly tubes in which 

 they lived ; they are common upon oyster shells and corals in our 

 own seas. 



Crustacea. — Only the claws of small crab or lobster have been 

 observed. 



Bivalve shells ( ConchiferaJ. — Casts of several species are common; 

 small oysters, of two or threo kinds, and scallops are very common. 



Ten species of Terebratuloo have been discovered, but the individuals 

 are exceedingly numerous ; these shells are eminently characteristic 

 of deep water, even at the depth of 100 fathoms 



