165 
Proceedings of the Northern Institution . 
Jameson gave an account of a Table of Colours, arranged for na- 
turalists by the Reverend Lansdown Guilding of St Vincent’s, 
intended as supplementary to Mr Syme’s treatise on colours. 
3d Dec. 1825 The Secretary read Dr T. S. Traill’s account 
of the Anatomy of the Trumpeter-bird, Psophia crepitans. 
Dr R. E, Grant then communicated some notices of the ha- 
bits of Tritonia arborescens, particularly the power possessed 
by that molluscous animal of producing a peculiar and very 
audible sound ; and the Doctor at the same time exhibited spe- 
cimens, which had been kept alive and active for more than 
three weeks, in a jar filled with sea-water, the water having been 
occasionally renewed. 
Professor Jameson communicated some remarks on the exist- 
ence of many mineral substances, in very minute portions, in 
the ocean and in the atmosphere. 
At the same meeting, the following gentlemen were elected 
office-bearers of the Society for the following year : 
Robert Jameson, Esq. President . 
Vice-Presidents : 
Robert Bald, Esq. Dr Robert Graham. 
Sir William Jardine, Bart. Rev. Dr A. Brunton. 
Treasurer , A. G. Ellis, Esq. Painter , P, Syme, Esq. 
Secretary , P. Neill, Esq. Librarian , James Wilson, Esq. 
Council : 
Wm. Drysdale, Esq. 
Gilbert Innes, Esq. 
Dr Robert Knox. 
G. A. W. Arnott, Esq. 
Dr Andrew Coventry. 
John Stark, Esq. 
Dr R. E. Grant. 
Dr John Boggle. 
Art. XXX. — Proceedings of the Northern Institution , In- 
verness. 
Sept 16. 1825. — =.A T this meeting the following gentlemen 
were elected 
Honorary Members. 
Sir James Macgrigor, Knight, F. 11. S. See. 
Dr Traill of Liverpool. 
Dr Thomas Thomson, Professor of Chemistry , University of Glasgow. 
