258 Seeley — On Saurornia. 



is a question on which I offer no opinion, further than to state that 

 in none of the typical mammalian characters does it approach the 

 mammals." 



in. — Science and Akt Lectures at Norwich. 



Lecture on the Geology of Norfolk. — This lecture, forming 

 one of the Science and Art series, was delivered at Norwich on April 

 28rd, 1866, by the Eev. John Gunn, F.G.S., president of the Nor- 

 wich Geological Society. 



As the whole geology of Norfolk was too large a subject for one 

 lecture, Mr. Gunti confined his remarks to the Tertiary strata, more 

 especially those exhibited in the section exposed along the sea-coast. 

 Commencing at Yarmouth, he detailed the circumstances from which 

 the presence there of the "V\ oolwich and Reading beds, and the London 

 clay, was determined, by Mr. Prestwich.' He then passed on to the 

 Norwich Crag : it appears north of the jetty at Cromer, whence it 

 gradually rises to an altitude of nearly twelve feet above the level of 

 the Chalk at Weybourne ; at the bottom of it is invariably a bed of 

 flints, yielding many interesting mammalian remains. The lecturer 

 referred to the recent paper of Mr. J. E. Taylor- on the fossils of the 

 upper part of the Norwich Crag series, which are of a more arctic 

 character than those of the lower part, and which, when brought 

 together, increase the percentage of recent to extinct shells, pro- 

 bably from 65 in the lower to 95 in the upper, so that the Norwich 

 Crag, in reality, is approximated to the Eed Crag more closely than 

 was imagined. The Norwich Crag at Horstead has yielded, during 

 the last year, five fine specimens of the teeth of Mastodon Arvernensis, 

 and several of the Elephas meridionalis. Mr. Gunn next described 

 the Forest bed. He believed that it was '•' an estuary of a large 

 river which flowed from tlie west, and that, as all Belgium was 

 covered with crag formations, it was an extension of the great river 

 bed of the Rhine." After directing attention to the laminated bed, 

 so called from the number of laminae in it, he made some concluding 

 observations on the nature of the soil. Norfolk is overspread for the 

 most part with Boulder-clay, and to this Boulder-clay the county is 

 indebted for its good agricultural soil. Dr. Buckland used to say 

 that he did not want to disturb the soil ; he knew what strata he 

 was uj)on by the appearance of the people. When he saw the rosy 

 cheeks of the lasses in Norfolk he knew that he was upon a rich 

 plain, and they were indebted to the Boulder-clay for the agricultural 

 pre-eminence of the county of Norfolk. 



Two Lectures on Coal and Petroleum. By Professor H. D. 

 Rogers, F.R.S., F.G.S., delivered at Norwich, in connectiori with the 

 Science and Art series, on April 27th, and May 1st, 1866. 



In the first lecture Prof. Rogers considered " Coal, its origin, the 



* Quart. Journ. Geol. Soc, 1860, p. 449. 



^ See reports of Norwicli Geological Society, p. 273. 



