wealden iguanodont and othee dinosauks. 61 



Discussion. 



The President agreed with the Author that judgment ought to 

 he used in applying names to isolated fragments of organisms, 

 though such a course was often unavoidable. 



Prof. Seelet congratulated Mr. Lydekker on the additions he had 

 made to our knowledge of Dinosauria. With many of the conclu- 

 sions arrived at he was disposed to agree. The attempted correla- 

 tion of evidence from American fossils was an important addition 

 to the fragmentary evidence available in this country, as in the 

 instance of the teeth and food of Ornithopsis. The whole group of 

 Iguanodonts being extinct, their structure could only be made out 

 in detail; evidence from existing orders as to their classification 

 was worthless. The paper was one of wide grasp. 



Dr. H. WooDWAED said Mr. Dawson, the discoverer of some of the 

 fossils described, deserved great praise for his energy in collecting, 

 and for the valuable specimens contributed by his assistance to the 

 Museum. 



Mr. Lydekkee, in reply, thanked the speakers for their criticisms. 



