Tol. 52.] ANNIVERSARY ADDRESS OF THE PRESIDENT. lvii 



same locality appeared in subsequent volumes ; but Mr. Hulke was 

 more particularly interested in the Dinosauria, and many con- 

 tributions to the osteology of this interesting group of reptiles have 

 appeared in the ' Quarterly Journal ' of the Geological Society, and 

 in the ' Philosophical Transactions ' of the Eoyal Society. 



Our first knowledge of the cranium of Iguanodon was due to 

 Mr. Hulke's work upon a specimen from the Isle of Wight, which 

 completely revealed the brain-cavity, but, as it did not include the 

 facial bones, its affinities were by no means easy to determine. 



In 1873 and 1874 Mr. Hulke made additions to our knowledge 

 of the small Wealden Dinosaur, which had been named by Professor 

 Huxley Hypsilophodon Foxii ; and in 1882 a still more important 

 memoir on the same species was published in the • Philosophical 

 Transactions/ 



In 1874 and 1876 he showed that a certain bone of Iguanodon, 

 which had been regarded as a scapula, was really a part of the 

 pelvis ; and, indeed, it proved to be the remarkable pubis of that 

 reptile, which so nearly resembles that of a bird. 



In 1879 the two genera, Poikilopleuron and Megalosaurus, were 

 proved by him to be one and the same Dinosaurian genus. In the 

 same year he described the remains of a new Wealden Dinosaur 

 under the name of Vectisaurus valdensis ; and in 1880 he made 

 known one of the most perfect Iguanodons discovered in this 

 country, obtained by Prof, (now Sir) Joseph Prestwich, from the 

 Kimmeridge Clay of Cumnor, which he named Iguanodon Prest- 

 wicJiii. 



In the following year there appeared in the ' Philosophical 

 Transactions ' Mr. Hulke's memoir on Polacanihus Foxii. This 

 remarkable Dinosaur, the name for which had been suggested by 

 Sir E. Owen, has a broad dermal shield spread out above the iliac 

 bones in such a way as to form a kind of carapace over the lumbar 

 and sacral regions; besides this, large spines and scutes were 

 attached to other parts of the animal's body. 



Mr. Hulke's presidential addresses to the Geological Society, 

 1883-84, formed an important contribution to our knowledge of 

 reptilian osteology, and especially threw light on the structure of 

 the shoulder-girdle in Plesiosaurs and their allies. 



The Iguauodont-remains found in England have been more or 

 less fragmentary, and discoveries made by other workers which 

 might serve to elucidate their structure were always hailed by 

 Mi. Hulke with extreme satisfaction. No one more heartily 



