Geological Society. 22/3 



March 4. — A letter to the President was communicated from 

 Sir E. Home, Bart. V.P.R.S., entitled " Some curious Facts 

 respecting the Walrus and Seal, discovered in the Examination 

 of Specimens brought by the late Expeditions from the Polar 

 Circle." 



A paper was also read, entitled " Some further Particulars 

 of a Case of Pneumato-thorax, by John Davy, M.D. F.R.S." 



March 11. — A paper was read, "On the Parallax of a Lyra; 

 by the Rev. John Brinkley, DD. F.R.S. &c." 



March 18. — A paper was read, entitled "An Account of 

 Experiments on the Velocity of Sound, made in Holland ; by 

 Dr. G. A. Moll, and Dr. A. Van Beck." 



March 25. — A communication was read from L. W. Dillwyn, 

 Esq. F.R.S. On the geological distribution of Fossil Shells. 

 A letter was likewise read from Thomas Tredgold, Esq. Civil 

 Engineer, to Thomas Young, M.D. For. Sec. R.S., " On the 

 Elasticity of Steel at various Degrees of Temper." 



GEOLOGICAL SOCIETY. 



Feb. 20. — A notice was read on the Megalosaurus, or 

 Great Fossil Lizard of Stonesfield, near Oxford ; by the Rev. 

 W. Buckland, F.R.S. F.L.S. President of the Geological So- 

 ciety, and Professor of Mineralogy and Geology in the Uni- 

 versity of Oxford, &c. &c. 



The author observes that he has been induced to lay before 

 the Society the accompanying representations of various por- 

 tions of the skeleton of the fossil animal discovered at Stones- 

 field, in the hope that such persons as possess other parts of 

 this extraordinary reptile, may also transmit to the Society 

 such further information as may lead to a more complete re- 

 storation of its osteology. No two bones have yet been dis- 

 covered in actual contact with one another, excepting a series 

 of the vertebrae. From the analogies of the teeth they may 

 be referred to the Order of the Saurians or Lizards. From 

 the proportions of the largest specimen of a fossil thigh-bone, 

 as compared with the ordinary standard of the JLacertce, it has 

 been inferred that the length of the animal exceeded forty feet, 

 and its height seven. Professor Buckland has therefore as- 

 signed to it the name of Megalosaurus. The various organic 

 remains which are found associated with this gigantic lizard 

 form a very interesting and remarkable assemblage. After 

 enumerating these, the author concludes with a description of 

 the plates and observations on the anatomical structure of such 

 parts of the Megalosaurus as have hitherto been discovered. 



March 5. — The paper entitled " Outline of the Geology of 

 the South of Russia," by the Honourable William T. H. Fox 

 Strangways, M.G.S., was concluded. 



Vol.63. No. 311. March 1821. F t The 



