200 OBITUARY. 
Presidents of the great Anti-Slavery Association of all countries 
held in London in 1840. His published works are very nume- 
rous: amongst the most valued are the ‘Flora Edinensis,’ 
‘Scottish Cryptogamic Flora,’ ‘Alge Britannice,’ and, in con- 
junction with Sir W. J. Hooker, ‘Icones Filicum,’ besides numerous 
papers in various scientific journals. He was Honorary Secretary 
of the Botanical Society and a Fellow of the Royal Society of 
Edinburgh ; an Honorary Member of the Royal Irish Academy, of 
the Imperial Academy Nature Curiosorum, and of the Natural 
History Society of Leipzig; Corresponding Member of the Natural 
History Societies of Paris, Cherbourg, Brussels, Philadelphia, &e. 
He died at his house in Edinburgh on the 4th of June. Seldom 
has a naturalist retained such peculiar powers of observation to so 
great an age. We heard from him only a few weeks ago, promising 
further contributions to his latterly favorite group of organisms, 
the Diatomacee. Our present number contains a paper read at 
a recent meeting of the Microscopical Society of London, and 
another has since been received, which will be published in our 
next number. 
