ANNIVERSARY ADDRESS OF THE PRESIDENT. 45 



in field-surve3^ing in the southern counties of England, and it is on 

 his work as a field-surveyor that his principal title to remembrance 

 by future geologists rests ; for he was one amongst the little band 

 who brought the geological surveying of sedimentary rocks to a 

 degree of exactitude and scientific accuracy previously unapproached. 

 Several of the beautiful longitudinal sections published by the 

 survey in former years were prepared by him. One of the best 

 known of the survey memoirs, that giving an account of the 

 geology of the Isle of Wight, was from his pen. He was also the 

 joint author, with Mr. W. Whitaker, of a ' Memoir on the Geology of 

 part of Berkshire and Hampshire.' During the last few years 

 Mr. Bristow was engaged in re-writing his account of the geology 

 of the Isle of Wight, and this at the time of his death was nearly 

 ready for publication. 



To the Journal of this Society Mr. Bristow contributed but two 

 papers, one of them a short note " On the supposed Remains of the 

 Crag on the North Downs near Polkestone " (Quart. Journ. Geol. Soe. 

 vol. xxii. p. 553), the other a paper " On the Lower Lias or Lias- 

 conglomerate of a part of Glamorganshire" (Quart. Journ. Geol. 

 Soc. vol. xxiii. p. 199). Amongst the subjects to which his atten- 

 tion was particularly directed, was the question of the Ehgetic beds 

 and their British representatives, to which he applied the name of 

 Penarth beds, at the suggestion of Sir R. Murchison, and of which 

 he communicated a description to the British Association at Bath in 

 1864. Apart from his labours in connexion with the Geological 

 Survey, Mr. Bristow's best known work is probably his ' Glossary of 

 Mineralogy,' published in 1861. He also translated several popular 

 French books by Simonin, Piguier, and others on geology and 

 mining. 



Owing to his deafness, Mr. Bristow but rarely took part in the 

 meetings of this Society, and he was probably in consequence less 

 known than he deserved to be. He served on our Council for two 

 years, from 1866 to 1868. Few men have left behind them a 

 better record of geological work, or have more thoroughly earned 

 the respect and esteem of their colleagues. 



John Percy was born at Nottingham on the 23rd of April 1817. 

 He was the son of a solicitor, and after his early education, studied 

 medicine in Paris, where he appears to have derived his peculiar 

 fondness for chemistry from the teaching of Gay-Lussac, Chevreul, 

 and Thenard. Subsequently he entered the University of .Ediu- 



