Vol. 52.] ANNIVERSARY ADDRESS OF THE PRESIDENT. lxix 



' Lessons in Elementary Physiology ' (1866), and many subsequent 

 editions ; ' An Introduction to the Classification of Animals ' (1869) - y 

 4 Lay Sermons, Addresses, and Reviews ' (1870). His text-books 

 on the Anatomy (I.) of the Yertebrata (1871) and (II.) of the 

 Invertebrata ; his ' Practical Biology ' ; ' Man's Place in Nature ' ; 

 his works on the Crayfish, and on Physiography, well illustrate the 

 wide extent and versatility of his powers, both as a naturalist and 

 author ; but it was by his lectures and addresses that he displayed 

 the most marvellous of his intellectual gifts, and produced the 

 greatest effect upon the science of his time. He had that wonderful 

 power of carrying his audience along with him, and the happy 

 facility of bringing his knowledge within the mental grasp of his 

 hearers. 



Of the 144 papers attributed to Prof. Huxley in the Eoyal 

 Society's list of scientific papers extending from 1847 to 1884, the 

 following may be mentioned as directly connected with our own 

 science : — 



On the Method of Palaeontology (Annals, 1856). Pygocephalus Cooperi, a Coal- 

 measure Crustacean (Q. J. Gr. S. 1857). On the genus Pteraspis (Brit. Assoc. Rep. 

 1858). On Cephalaspis and Pteraspis (Q. J. G. S. 1858). On Plesiosaurus 

 JEtheridgei (Q. J. Gr. S. 1858). On Persistent Types of Animal Life (Roy. Inst~ 

 Proc. 1858-62). On Species and Races and their Origin (Roy. Inst. Proc. 1860). 

 On Stagonolepis Robertsoni (Q. J. G. S. 1859). On some Amphibian and Reptilian 

 Remains from South Africa and Australia (Q. J. G. S. 1859). On Dicynodon 

 Murrayi, South Africa, and on Skulls of Dicynodonts (Q. J. G. S. 1859). On 

 Rhamphorhynchus Buchlandi, a Pterosaurian from Stonesfield (Q. J. G. S. 1859). 

 On a Fossil Bird and a Fossil Cetacean from New Zealand (Q. J. G. S. 1859). On 

 Dermal Armour of Crocodilus Hastingsiee (Q. J. G. S. 1859) . On the Anatomy of 

 Pterygotus (Geol. Surv. Mem. 1859). On Dasyceps Buchlandi (Geol. Surv. Mem. 

 1859). On the Lower Jaw of a Labyrinthodont (Geol. Surv. Mem. 1859). On 

 Macrauchenia boliviensis (Q. J. G. S. 1861). On Pteraspis dunensis (Q. J. G. S. 

 1861). Systematic Arrangement of Devonian Fishes (Geol. Surv. Mem. 1861). New 

 Labyrinthodonts from Edinburgh Coal-field (Q. J. G. S. 1862). On a Stalk-eyed 

 Crustacean from the Coal-measures, Paisley (Q. J. G. S. 1862). On the Premolar Teeth 

 of Diprotodon (Q. J. G. S. 1862). On a New Species of Giyptodon (Roy. Soc. Proc. 

 1862-63). Anthracosaurus Russelli, Coal-field, Lanark (Q. J. G. S. 1863). On 

 Cetacean Fossils termed ' Ziphius,' Cuvier, from the Red Crag (Q. J. G. S. 1864). 

 Osteology of Giyptodon (Phil. Trans. 1865). Vertebrate Remains from Jarrow 

 Colliery, Kilkenny, Ireland (Geol. Mag. 1866). Dinosaurian Reptiles from South 

 Africa (Q. J. G. S. 1867). On Acanthopholis horridus, anew Reptile from the Chalk 

 Marl (Geol. Mag. 1867). New Specimen of Telerpeton elginense (Q. J. G. S. 1867). 

 Animals intermediate between Birds and Reptiles (Geol. Mag. 1868). Two new 

 Fossil Lacertilians from South Africa (Geol. Mag. 1868, pp. 201-205). On Archceo- 

 pteryx lithographica (Roy. Soc. Proc. 1868). On Hyperodapedon (Q. J. G. S. 

 1869). On a new Labyrinthodont, Pholiderpeton scutigerum, from Bradford 

 (Q. J. G. S. 1869). On the Upper Jaw of Megalosaurus (Q. J. G. S. 1869). Prin- 

 ciples and Methods of Palaeontology (Smithsonian Reports, 1869). The Milk- 

 Dentition of Palceotherium magnum (Geol. Mag. 1870). On Hypsilophodon Foxii? 

 a new Dinosaurian from the Wealden, Isle of Wight (Q. J. G. S. 1870). Further 

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