52 



in conjunction with Buckland ; in other cases his pen was supported 

 by the pencil of De la Beche ; but in every record of his scientific life, 

 just self-reliance, close study, logical expression, and completeness of 

 view, strongly mark the mind of W. Conybeare, a mind well 

 trained in letters and philosophy before it was turned to the difficult 

 problem of the physical history of the earth. 



Dean Conybeare was a Corresponding Member of the Institute of 

 France; he was admitted Fellow of the Royal Society in 1819, but 

 he was not a contributor to the Philosophical Transactions. 



Dr. MARSHALL HALL was born at Basford in Nottinghamshire, 

 in the year 1790. His father is stated to have been a man of supe- 

 rior ability, and to have made considerable attainments in chemistry 

 and mechanics, whereby he was enabled to introduce improvements 

 into the cotton-spinning trade in which he was engaged. 



Dr. Hall received his early education at Nottingham and Newark, 

 and at the age of twenty entered on the study of medicine at the 

 University of Edinburgh, where three years later, in 1812, he took 

 his degree. For the next two years he held the office of Clinical 

 Clerk (or as it is now termed, ' Resident Physician ') in the Royal 

 Infirmary of that city, after which, with a view to further professional 

 improvement, he visited Paris, Berlin, Gottingen, Giessen, and other 

 medical schools of the Continent of Europe. Having commenced 

 practice in Nottingham in 1815, he was appointed Physician to the 

 General Hospital there, and rapidly rose to eminence. 

 . During the ten years that Dr. Hall followed his profession in his 

 native county, his mind was actively engaged in scientific pursuits ; 

 and it was at this time that he communicated to the Medical and 

 Chirurgical Society of London his well-known memoir "On the 

 r Effects of the Loss of Blood,'* subsequently published as a separate 

 work, which was directed against the practice, at that time prevalent, 

 of what the author considered excessive depletion in inflammatory and 

 supposed inflammatory disorders. 



Having already earned a name in the medical profession, Dr. Hall, 



in 1 826, transferred himself to London. His career as a physician 



in the metropolis was eminently successful, so that he was enabled at 



the age of sixty to release himself from strictly professional labour. 



Amid the cares and duties of a London physician's life, Dr. Hall 



