( 872) 
AWARDS OF THE KEITH, MAKDOUGALL-BRISBANE, AND NEILL PRIZES, 
FROM 1827 TO 1879, 

I. KEITH PRIZE. 
lst Brenyiat Periop, 1827-29.—Dr Brewster, for his papers “on his Discovery of Two New Immis- 
cible Fluids in the Cavities of certain Minerals,’ published in 
the Transactions of the Society. 
2p BienniaL Periop, 1829-31.—Dr Brewster, for his paper “on a New Analysis of Solar 
Light,” published in the Transactions of the Society. 
3p Brenntat Periop, 1831-33.—TuHomas Granam, Esq., for his paper “ on the Law of the Diffusion 
of Gases,” published in the Transactions of the Society. 
| 47H Biewniat Purtop, 1833~35.—Professor J. D. Fores, for his paper “ on the Refraction and Polari- 
zation of Heat,” published in the Transactions of the Society. 
5TH BrenniaL Periop, 1835-37.—Joun Scorr Russe xt, Esq.,for his Researches “on Hydrodynamics,” 
published in the Transactions of the Society. 
6TH BrenniaL Periop, 1837-39.—Mr Jonn Suaw, for his experiments “on the Development and 
Growth of the Salmon,” published in the Transactions of the 
Society. ; 
7TH Brenniat Periop, 1839—41.—Not awarded. 
8tH BrenniaL Periop, 1841-43.—Professor J. D. Forszs, for his Papers “on Glaciers,” published 
in the Proceedings of the Society. 
9TH BrenniaL Periop, 1843—45.—Not awarded. 
107TH Brenntau Periop, 1845—47,— General Sir Tuomas Brispane, Bart., for the Makerstoun Observa- 
tions on Magnetic Phenomena, made at his expense, and 
published in the Transactions of the Society. 
11ra Brenniat Periop, 1847—49.—Not awarded. 
127TH Brennian Periop, 1849-51.—Professor Kennann, for his papers “on General Differentiation, 
including his more recent communication on a process of the 
Differential Calculus, and its application to the solution of 
certain Differential Equations,” published in the Transactions 
of the Society. 
13rH Brenntat Periop, 1851-53.—W. J. Macquorn Ranxinz, Esq., for his series of papers “on the 
Mechanical Action of Heat,” published in the Transactions 
of the Society. 
14ru Brewnrat Periop, 1853-55.—Dr Tuomas Anprrson, for his papers “on the Crystalline Con- 
stituents of Opium, and on the Products of the Destructive 
Distillation of Animal Substances,” published in the Trans- 
actions of the Society. 

