BY D. ElIBLETON, M D. 331 



added that they all contain a considerable amount of original 

 matter, which from time to time materially extended the bounda- 

 ries of our knowledge of Mollusca and Zoophytes. 



The Catalogues of Mollusca and Zoophytes are not mere lists 

 of names arranged in definite order, they are Catalogues descrip- 

 tive of the species, and interspersed with a variety of useful 

 information. 



In disposition Mr. Alder was mild, genial, and unobtrusive, 

 willing at any time to impart his knowledge to others with much 

 affability, and never allowing an opportunity to escape him of 

 encouraging the young and inexperienced student. In conduct 

 upright and honourable, he was, in feeling, word, and deed, a 

 gentleman. 



The accuracy of his judgment, and his nice discrimination in 

 the determination of species, in his peculiar departments, were 

 acknowledged wherever such studies were pursued, and much of 

 his time of late years was taken up in critically examining and 

 naming collections submitted to him by his numerous scientific 

 friends. In this way he rendered much good service to science 

 in his own quiet unostentatious way. 



He terminated his connection with business in or about the 

 year 1840, and after that devoted himself exclusively to his 

 favourite studies. 



A great calamity, in which he had unfortunately many fellow- 

 sufferers, befel him in 1857, in the failure of the Northumberland 

 and Durham District Bank. By this he lost all his property and 

 savings in a moment, yet no one ever heard him complain ; no 

 word of blame or of anger escaped him. He knew how to keep 

 an even mind in adversity, as he had done in prosperity, and he 

 was one of those few persons who have not had the extreme pain 

 of being, in adversity, forsaken by their friends. 



A numerously and rapidly signed representation, containing 

 the names of all our celebrities in science, and of troops of other 

 friends, was made to the Government, who ultimately gave him 

 from the Civil List a pension of £70 per annum. Powerful pri- 

 vate friends, too, in the most delicate and handsome manner, 

 came to his succour, and arrangements were entered into that 



