( 690 ) 



AWARDS OF THE KEITH, MAKDOUGALL-BRISBANE, AND NEILL PRIZES, 



FROM 1827 TO 1879. 



I. KEITH PRIZE. 



1st Biennial Period, 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. 

 2nd Biennial Period, 1829-31. — Dr Brewster, for his paper "on a New Analysis of Solar 



Light," published in the Transactions of the Society. 

 3rd Biennial Period, 1831-33. — Thomas Graham, Esq., for his paper " on the Law of the Diffusion 



of Gases," published in the Transactions of the Society. 

 4th Biennial Period, 1833-35. — Professor J. D. Forbes, for his paper " on the Eefraction and Polari- 

 zation of Heat," published in the Transactions of tho Society. 

 5th Biennial Period, 1835-37. — John Scott Russell, Esq., for his Eesearches "on Hydrodynamics," 



published in the Transactions of the Society. 

 6th Biennial Period, 1837-39. — Mr John Shaw, for his experiments "on the Development and 



Growth of the Salmon," published in the Transactions of the 

 Society. 

 7th Biennial Period, 1839-41. — Not awarded. 

 8th Biennial Period, 1841-43. — Professor James David Forbes, for his Papers "on Glaciers," 



published in the Proceedings of the Society. 

 9th Biennial Period, 1843-45. — Not awarded. 



10th Biennial Period, 1845-47. — General Sir Thomas Brisbane, Bart., for the Makerstoun Observa- 

 tions on Magnetic Phenomena, made at his expense, and 

 published in the Transactions of the Society. 



11th Biennial Period, 1847-49. — Not awarded. 



12th Biennial Period, 1849-51. — Professor Kelland, 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. 



13th Biennial Period, 1851-53. — W. J. Macquorn Rankine, Esq., for his series of papers "on the 



Mechanical Action of Heat," published in the Transactions 

 of the Society. 



14th Biennial Period, 1853-55. — Dr Thomas Anderson, 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. 



1 5th Biennial Period, 1855-57. — Professor Boole, for his Memoir " on the Application of the Theory 



of Probabilities to Questions of the Combination of Testimonies 

 and Judgments," published in the Transactions of the Society. 



16th Biennial Period, 1857-59. — Not awarded. 



17th Biennial Period, 1859-61. — John Allan Broun, Esq., F.R.S., Director of the Trevandrum. 



Observatory, for his papers " on the Horizontal Force of the 

 Earth's Magnetism, on the Correction of the Bifilar Magnet- 

 ometer, and on Terrestrial Magnetism generally," published in 

 the Transactions of the Society. 



18th Biennial Period, 1861-63. — Professor William Thomson, of the University of Glasgow, for his 



Communication " on some Kinematical and Dynamical 

 Theorems." 



19th Biennial Period, 1863-65. — Principal Forbes, St Andrews, for his "Experimental Inquiry into 



the Laws of Conduction of Heat in Iron Bars," published in 

 the Transactions of the Society, 



