AWARDS OF THE KEITH PRIZE SINCE 1845. 
(Continued from Transactions, Vol. XVI., page iii.) 
107TH BIENNIAL Pariop, 1845-47. 
13TH 
14TH 
1847-49. 
1849-51. 
1851-53. 
1853-55. 
General Sir ToomAS BriISBANE, Bart., for the Maker- 
stoun Observations on Magnetic Phenomena, made at 
his expense, and published in the Society’s Trans- 
actions.* 
Not awarded. 
Professor KELLAND, for his papers on General Differ- 
entiation, including his more recent communication 
on a process of the Differential Calculus, and its 
application to the solution of certain Differential 
Equations. 
W. J. Macquorn RANKINE, Esq., for his series of 
papers on the Mechanical Action of Heat. 
Dr THOMAS ANDERSON, for his papers on the Crys- 
talline Constituents of Opium, and on the Products 
of the Destructive Distillation of Animal Substances. 
* A Silver Medal, bearing the head of Napier on one side, and a suitable inscription on the other, was at 
the same time awarded to Mr Joun Atian Broun, under whose immediate direction these Observations were 
made, 
